Hello,
The documentary "13th" produced by Ava Duvernay gives a detailed history of racial inequality towards the African-American community - while it does not necessarily deal with police brutality per se, it poignantly explores America's history of mass incarceration and the disproportionate imprisonment of the African-American community. James Baldwin's "I Am Not Your Negro" (2017) recounts slave trade, racial discrimination and police brutality over the years of his life, in detail. "If Beale Street Could Talk" (2018) and Harper Lee's "To Kill a Mockingbird" (1960) novel and the subsequent film adaptation are about wrongly accusing a black man for rape.
When it comes to movies, Reinaldo Marcus Green's "Monsters and Men" (2018) offers a chilling parallel to George Floyd's death, as it deals with a cop who chokes a black man, who dies as he could not breathe. Kathryn Bigelow's "Detroit" (1967) deals with the Algiers Motel incident which resulted in law personnel gunning down three tenage black boys and injuring several others. Spike Lee's academy award winning "BlackKklansman" (2018) shows how little siginificance is given to killing of black boys.
These movies and documentaries could be used to compare the novel's theme of police brutality and systemic racism.