[Captain Walker]

If one was a serial killer these riots would be fertile ground. One could go into them masked and armed with who knows what concealed or otherwise and get away scot free one would think.

You're not kidding.

One of the European news outlets showed a demonstrator in Seattle who had gotten his hands on one of the police AR-15s; an undercover cop drew his gun and grabbed it from him.

You can see it here at about the 1:15 - 1:20 mark: tagesschau

[Grimmy]

https://www.youtube.com/watch?v=aVAMUejexa0

If it’s this incident, it was a private security man hired by a news crew for protection while filming the riots.

[Eagles6]

Actually, he was armed security for a tv reporter.