Maybe they are defending The Constitution,state law and official police policy.Even alleged criminals have Constitutional rights.
I have a lot to give and I do give to others when I am able. You may understand when you have enough to satisfy all your needs and more. Maybe at that point you can go to an inner city school and do some good with actual service instead of being an online crusader. My observation is that people who are the most rabid about racial equality have deep seated issues about their own racial prejudices that they cannot face. Hence they tend to be the biggest racists, more racist than those who can admit that as human beings we all have racial biases.
My bro, I've been volunteering to tutor refugees since I was a teenager. I didn't need to wait until I "made it".
I'm not sure I have biases in my old age, because I have seen enough of life to think that everyone has problems. I don't need to add to the problems of others.