Well, part of the reason you would never see a BLM protestor walk away with no incarceration is because most of our elected officials tend to avoid standing up for those protesting racism, bigotry and, (sometimes even) misogyny. Those that do stand up for the rights of the marginalized, like AOC, Omar, Pressley, and (to a lesser extent) Bernie and Warren, tend to be vilified and, consequently, are themselves marginalized.