What a fucked up piece of propaganda. Pretti wasn't being confrontational, the ICE agents were. He was trying to help a woman who was being pepper sprayed. Then he was pepper sprayed and assaulted by half a dozen thugs, disarmed after never drawing his gun, and shot in the back multiple times.
Walter puts the burden on Pretti to de-escalate the situation because he was armed. Yet puts no burden on the ICE thugs not to shoot a man who did nothing but try to protect a woman being physically abused by an ICE thug.
If you can come to the conclusion anything Pretti did that day justified him being executed you've lost any any sense of PERSPECTIVE.