People who have been dealing with police brutality for decades need to be remembered as protests against police violence continue. I could get brutalized for showing up at a protest, but someone with different DNA could get brutalized for walking downtown. But the evolution of BLM protests into protests against police brutality used against protesters and protests against federal policing of American cities are perfectly valid movements too. I see people who had no personal experience with police brutality who joined a protest based on their reaction to the Floyd video got to experience profiling (you’re here with a sign, so must be a violent anarchist out to smash glass), police brutality, and violent over-reactions. Brings to mind the hypothesis that military action in Iraq was a huge recruitment driver for radical groups — people who disliked abstract America policy in a non-violent way experienced that policy as friends and family became collateral damage. And wanted to “do something” to push back.
Although, that may be the point of the BLACK Lives Matter movement — that given two equally valid movements, the one impacting white people hold the nation’s attention while the equally valid concerns from a minority group fall by the wayside.