There's some bad blood between Taylor Swift and Twitter users.
The 27-year-old singer didn't join her celebrity pals at the numerous Women's Marches that took place all over the world on Saturday, but she did offer a message of support on Twitter.
"So much love, pride, and respect for those who marched. I'm proud to be a woman today, and every day. #WomensMarch," she wrote.
However, the kind words were not enough for some -- many were angry at the "Shake It Off" songstress for not physically participating in the marches herself, calling the tweet "gross opportunism."
Others also echoed the sentiment:
"Stop using feminism as a prop to fuel your fake girl power narrative/meticulously crafted PR persona," one person on social media wrote.
"She has a voice. She has a platform. I wish she would have used them both," said another.
One person even went so far as to blame the singer for the outcome of the presidential election: "Then why didn't you say anything during the presidential campaign when we could've made it so that this didn't have to happen."
Swift is recognized as a feminist icon (i.e. her speech at the 2016 GRAMMYs speech), so many have accused the pop star of failing to show up when it mattered most.
But the pop icon wasn't the only A-lister missing -- Selena Gomez, Jennifer Lawrence and the Kardashian clan were also noticeably absent, and they too offered their support on social media.
Many Hollywood legends were in attendance at various marches across the nation. Cher, Ashley Judd and Madonna (who got herself in some hot water with the Secret Service) made their voices heard in New York City, while Alicia Keys led a passionate crowd in Washington D.C.
Check out the celebs who marched over the weekend in the slideshow below: