Garner's death was filmed, with "I can't breathe" being his final words, which went viral and became a mantra of the Black Lives Matter ("BLM") and anti-police brutality movement.

On December 4, 2014, a grand jury declined to indict the police officer, Daniel Pantaleo.

[3] Carr often makes appearances with Al Sharpton and National Action Network at protests and rallies opposing police brutality and supporting Black Lives Matter.

[7] In September 2019, Carr testified in front of the House Judiciary Committee about police brutality, alongside James Blake and Al Sharpton.

[10][11] On the opening night of the 2020 Democratic National Convention, Carr appeared in a video that also featured Democratic presidential nominee Joe Biden, Houston Police Chief Art Acevedo, activist Jamira Burley, NAACP President Derrick Johnson, and Chicago Mayor Lori Lightfoot.