This was a long time coming. And its not just 'an agenda'.
Things like BLM rose up largely not because of specific incidents, but because of decades of mistreatment by the police and judicial systems. They blew up when they did because the ubiquity of video cameras thanks to smartphones made it that much easier for people to go "See?! We've been telling you this for years, now we have proof!". People rallied around specific incidents, but if it hadnt been those, it would have been others as it was never about one incident.
Then a guy known for racist behavior throughout his history, whose only political renown was leading a racist movement against the president, and whose major (only?) policy stance was attacking mexicans as rapists and murderers, runs a campaign high in racial messaging, and appoints people known for racism into his staff, including his future AG who was deemed too racist by the senate to be a judge at one point.
These things were all blatant before the election. And maybe some voted for Trump for other reasons. But even when they did, they'd have to be blind or in severe denial to not see his racism, meaning they decided 'The effects of his racism aren't important to me because it doesnt affect me'. That, in itself, is a major part of the racism in this country, and something i think more people need to take away from these protests. Just because you aren't viciously racist, doesnt mean you aren't part of the problem
So were the people who are hispanic or black or any other race other than white that voted for Trump stupid in your opinion or what? White people weren't the only ones who voted for the guy.