It's not racism, it's the form that the protests take. It's one thing to object to police trying to protect black communities by stopping thugs, but to disrespect the flag and, by extension, the millions who've fought and died for it, is aiming at the wrong target.
Do black lives matter? Of course - the police defend black lives and black communities every day. From the thugs.
It's thug lives that don't matter, as far as I'm concerned.