I agree with a lot of what @Atmos said. Nazi's brought Germany out of a bad time, but what they did after was totally horable.
For the kids that attacked that kid, they should have been charged with a hate crime right away. The "F*$k whites" comment should have done it right away. And, him being special needs just makes it even worse. Just think about what the KKK did back in the 60's. Beating up black people just because they're a different race. If it was a group of white kids beating on a black one, there would be riots in the streets, and people yelling "Get a rope"(sound familer?).
The whole BLM thing might have started with good intentions, but people have taken it too far.
You're probably talking about the haze that shows up. Cheapest way to get rid of it is to get some toothpaste, and a toothbrush. Use that to polish them, and wipe it off. Worked on my old car.