The black cop in Die Hard killed an innocent kid. He was still on patrol and helping Bruce Willis against the bad guys. It's how Hollywood wants it played and, to be honest, the liberal media. What makes you think it DOESN'T happen? Do you read every news story? Actually, it's probably not newsworthy because of what Nash said.
Also, most cops are white, and ambushing them with police calls doesn't help the trigger finger. Do you think it does?