These bike guys decided the best way to honor their friend that died in a hit and run would be to block traffic at a busy intersection.
A police officer shows up to break up their unlawful protest and they attack his vehicle. Reports say they swung their bikes at the police car and someone even stabbed his tire with a knife.
The driver of the offending vehicle must have gotten tired of waiting. Police have not found the driver yet. They might have been able to catch them, had someone not slashed their tires.