People on either side of race/racism debates rarely win the other side round. The same is true of many different opinions, even trivial stuff like Playstation vs Xbox, Android vs iOS etc.
I think much of this comes down to whether or not you've been directly exposed to something. Let me give you an example of what I mean. There was a tv prog on last night about police corruption in the 70's. Featured was a white guy who was fitted up for a crime he hadn't committed. He was imprisoned for a couple of years and it took 40ish years for him to clear his name. Whilst being interviewed present day, he said how much the arrest and subsequent conviction had affected his relationship with his parents, who had essentially gone to their graves thinking he was a convicted criminal. Now cleared, they weren't here to see it. He said the whole thing had affected his entire adult life.
Now, let's say for the sake of argument this event led to the aforementioned man not having much time for the police or wider authorities, even to this day. His direct experience 40ish years ago has tarnished his opinion and view of these organisations.
Now, let's rewind the clock and imagine he'd never been falsely accused, arrested or convicted. It's possible/probable that very same man would sit today and say 'I think the police do a great job, I've always had a lot of respect for them.'
My point is, unless you directly experience something, it's easy to essentially say to a group of people 'oh for goodness sake get over it and move on!'
