Police officer killed in Texas; 2 others wounded in Missouri, Fla.
Officer fired over Facebook post saying Michelle Obama is 'fluent in ghetto'
Minnesota officer will face charges in July shooting death of Philando Castile
Surveillance video captures Rikers Island inmate brutally attacking correction officer
Officer subdues man holding knife to baby's neck
Tulsa cop Betty Shelby's past under scrutiny after Terence Crutcher shooting
Hero officer who pulled man from path of train: 'That's my job'
Police officer rescues puppy and sleeps at her side