They don't remember the Rodney King treatment by the LAPD that ended up creating a riot. Somebody with a camera happened to tape the whole incident, and even then whites were in support of the police.
An innocent man gets beaten with batons by the police that ends up creating a riot for police brutality against an innocent man, and they still don't get the message.
And they never will.
Do you really want to use that as an example.
You have forgotten that Rodney King was speeding, he ran when the cops tried to pull him over, when they did get him stopped he resisted arrest.
He was high on Meth, he fought with the police, he refused to comply when they told him to get down.
After the cops shot him with tasers, he still refused to go down, and started fighting them.
They used the appropriate force to take him down.
They overreacted when they continued to hit him AFTER he was down.
But, as long as he refused to go down, they did what was required, legal, and appropriate.
And I suggest you ride along with cops yourself and see what really happens on the street, like you suggested someone else do.