The most iconic news photos of 2015

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Best news photos of the year 2015
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The most iconic news photos of 2015
ZURICH, SWITZERLAND - JULY 20: Comedian Simon Brodkin (not pictured) throws dollar bills at FIFA President Joseph S. Blatter during a press conference at the Extraordinary FIFA Executive Committee Meeting at the FIFA headquarters on July 20, 2015 in Zurich, Switzerland. (Photo by Philipp Schmidli/Getty Images)
CALAIS, FRANCE - JULY 30: Gendarmerie attempt to prevent people from entering the Eurotunnel terminal in Coquelles on July 30, 2015 in Calais, France. Hundreds of migrants are continuing to attempt to enter the Channel Tunnel and onto trains heading to the United Kingdom. (Photo by Rob Stothard/Getty Images)
BALTIMORE, MD - APRIL 28: A helicopter with a spot light watches over police and protesters before a mandatory, city-wide curfew of 10 p.m. near the CVS pharmacy that was set on fire yesterday during rioting after the funeral of Freddie Gray, on April 28, 2015 in Baltimore, Maryland. Gray, 25, was arrested for possessing a switch blade knife April 12 outside the Gilmor Houses housing project on Baltimore's west side. According to his attorney, Gray died a week later in the hospital from a severe spinal cord injury he received while in police custody. (Photo by Andrew Burton/Getty Images)
BALTIMORE, MD - APRIL 27: Demonstrators climb on a destroyed Baltimore Police car in the street near the corner of Pennsylvania and North avenues during violent protests following the funeral of Freddie Gray April 27, 2015 in Baltimore, Maryland. Gray, 25, who was arrested for possessing a switch blade knife April 12 outside the Gilmor Homes housing project on Baltimore's west side. According to his attorney, Gray died a week later in the hospital from a severe spinal cord injury he received while in police custody. (Photo by Chip Somodevilla/Getty Images)
MOBILE, AL- AUGUST 21: Republican presidential candidate Donald Trump greets supporters after his rally at Ladd-Peebles Stadium on August 21, 2015 in Mobile, Alabama. The Trump campaign moved tonight's rally to a larger stadium to accommodate demand. (Photo by Mark Wallheiser/Getty Images)
PARIS, FRANCE - NOVEMBER 16: The Eiffel Tower is illuminated in Red, White and Blue in honour of the victims of Friday's terrorist attacks on November 16, 2015 in Paris, France. Countries across Europe joined France today to observe a one minute-silence in an expression of solidarity with the victims of the terrorist attacks, which left at least 129 people dead and hundreds more injured. (Photo by Christopher Furlong/Getty Images)
PARIS, FRANCE - JANUARY 11: Demonstrators make their way along Boulevrd Voltaire in a unity rally in Paris following the recent terrorist attacks on January 11, 2015 in Paris, France. An estimated one million people are expected to converge in central Paris for the Unity March joining in solidarity with the 17 victims of this week's terrorist attacks in the country. French President Francois Hollande will lead the march and will be joined by world leaders in a sign of unity. The terrorist atrocities started on Wednesday with the attack on the French satirical magazine Charlie Hebdo, killing 12, and ended on Friday with sieges at a printing company in Dammartin en Goele and a Kosher supermarket in Paris with four hostages and three suspects being killed. A fourth suspect, Hayat Boumeddiene, 26, escaped and is wanted in connection with the murder of a policewoman. (Photo by Christopher Furlong/Getty Images)
GUMDA, GORKHA DISTRICT, NEPAL - MAY 09: Nepalese villagers look on as they watch a helicopter picking up a medical team/dropping aid at the edge of a makeshift landing zone on May 9, 2015 in the village of Gumda, Nepal. (Photos by: Daniel Berehulak/Getty Images Reportage)
KOS, GREECE - AUGUST 31: Migrants from Pakistan land on shore after completing a journey in a small dinghy crossing a three mile stretch of the Aegean Sea from Turkey August 31, 2015 in Kos, Greece. Migrants from many parts of the Middle East and African nations continue to flood into Europe before heading from Athens, north to the Macedonian border. Since the beginning of 2015 the number of migrants using the so-called 'Balkans route' has exploded with migrants arriving in Greece from Turkey and then travelling on through Macedonia and Serbia before entering the EU via Hungary. The number of people leaving their homes in war torn countries such as Syria, marks the largest migration of people since World War II. (Photo by Dan Kitwood/Getty Images)
SUBOTICA, SERBIA - SEPTEMBER 09: Migrants make their way through Serbia, near the town of Subotica, towards a break in the steel and razor fence erected on the border by the Hungarian government on September 9, 2015 in Subotica, Serbia. Thousands of migrants have funnelled their way across country to the small gap in the steel fence unopposed by the authorities. Since the beginning of 2015 the number of migrants using the so-called 'Balkans route' has exploded with migrants arriving in Greece from Turkey and then travelling on through Macedonia and Serbia before entering the EU via Hungary. The number of people leaving their homes in war torn countries such as Syria, marks the largest migration of people since World War II. (Photo by Christopher Furlong/Getty Images)
RIGONCE, SLOVENIA - OCTOBER 23: Migrants are escorted through fields by police as they are walked from the village of Rigonce to Brezice refugee camp on October 23, 2015 in Rigonce,, Slovenia. Thousands of migrants marched across the border between Croatia into Slovenia as authorities intensify their efforts to attempt to cope with Europe's largest migration of people since World War II. (Photo by Jeff J Mitchell/Getty Images)
A Turkish police officer carries a migrant child's dead body (Aylan Shenu) off the shores in Bodrum, southern Turkey, on September 2, 2015 after a boat carrying refugees sank while reaching the Greek island of Kos. Thousands of refugees and migrants arrived in Athens on September 2, as Greek ministers held talks on the crisis, with Europe struggling to cope with the huge influx fleeing war and repression in the Middle East and Africa. AFP PHOTO / Nilufer Demir / DOGAN NEWS AGENCY = TURKEY OUT = (Photo credit should read Nilufer Demir/AFP/Getty Images)
SKALA SIKAMINIAS, GREECE - OCTOBER 01: Refugees arrive on the shores of the Greek island of Lesbos after crossing the Aegean sea from Turkey on an inflatable boat on October 1, 2015 near village of Skala Sikaminias, Greece. Despite bad weather due to the upcoming Autumn, migrants and refugees are risking their lives in search of a better one in the European Union. Officals have warned that a rise in migrant deaths is expected as weather conditions gradually worsen. (Photo by Matej Divizna/Getty Images)
ATHENS, GREECE - JUNE 22: A man waves a EU flag as pro-Euro protesters take part in a rally in front of the Parliament on June 22. 2015 in Athens, Greece. Thousends of people attended the rally in support of Greece remaining in the European Union. The Eurozone's 19 national leaders held an emergency summit in Brussels to discuss the crisis and welcomed new proposals from the Greek government after talks today to haul Athens back from the brink of bankruptcy. (Photo by Milos Bicanski/Getty Images)
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Climate change, Freddie Gray, refugees, ISIS -- these are just some of the names and terms we've become more familiar with since the start of 2015. The year began in tragic fashion with the attack at the office of Parisian magazine Charlie Hebdo, where 12 were killed. Throughout the year, many discussions were had on how to best handle violent threats from the Middle East, especially from militant terrorist organizations such as the Islamic State.

Related to the continued violence from Islamist groups is the severe refugee crisis in both the Middle East and Europe, as families displaced by war and danger attempt to flee to a safer, better life. Fears rose over the hot-button topic of allowing refugees into European countries and the United States after it was reported that a militant posed as a migrant from Syria, then entered Paris and helped to orchestrate the year's second terrorist attack on the city, when 130 were killed on November 13.

Stateside, deadly mass shootings in Charleston, South Carolina and San Bernardino, California, among others, spurred heated arguments about gun control. We also saw ongoing demonstrations against police brutality, and events related to the upcoming presidential election made headlines all year long.

Click through the slideshow above to see the most iconic, newsworthy photos from 2015's biggest stories.

More year-end roundups on AOL.com:
24 greatest discoveries of 2015 from Swiss cheese holes to a new cancer source
Notable deaths: People we lost in 2015
Most notable magazine covers of 2015
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