George Floyd's Aunt Calls Ex-Cops' Trial Triggering, Publishes Memoir

George Floyd's aunt, Angela Harrelson, knows his murder ignited a worldwide wave of activism, and she wants to make sure it continues ... as the federal trial continues for 3 ex-cops involved in his fatal arrest.

Angela joined us Wednesday on "TMZ Live," but on Tuesday she'd been in court to see ex-officer Tou Thao testify. He and fellow ex-cops J. Alexander Kueng and Thomas Lane are accused of violating George's civil rights during the arrest.

She called it a triggering day -- having to see the gut-wrenching video again, as well as listening to Thao's testimony.

Unlike Derek Chauvin, Thao, Lane and Kueng did not have their knees on George's neck ... but Angela told us why she feels they still bear responsibility for his death.

Angela, who was extremely close to George, has also written a memoir, "Lift Your Voice: How My Nephew George Floyd's Murder Changed the World." As she explained, writing it was cathartic -- but it also gave her a chance to be a voice for George.

She says she's urging others to keep using their voices as they did during months of marches for equality and justice after George's murder. Angela's point is ... when you see something that isn’t fair speak up, because every person can make a difference.