Protesters hold signs during a march and rally for slain teenager Trayvon Martin, March 31, 2012, in Sanford, Fla. The Black Lives Matter movement hits a milestone on Thursday, July 13, 2023, marking 10 years since its 2013 founding in response to the acquittal of the man who fatally shot Martin. Gunned down in a Florida gated community where his father lived in 2012, Martin was one of the earliest symbols of a movement that now wields influence in politics, law enforcement and broader conversations about racial progress. (AP Photo/Julie Fletcher, File)
