Pulling over and intimidating a motorist simply because of their race is wrong, and unconstitutional.  You are saying you wish there had been a cop around when you felt intimidated by some people who were behaving aggressively on a Los Angeles street.  That is different, and I wish for your sake you could have had some assistance from the police to protect you from specific aggressive and intimidating individuals who appear to have been operating a window washing scam.  But we are talking about thedifferent sides of two different issues.