During BLM protests there were anti-protesters doing exactly what I described, and they were not automatically shot at by police. Of course the political roles are reversed, but I don't believe it is as guaranteed as you suggest. And the legality is of course much more complicated than you portray as well.

The courts decided exactly like I said when cops shot. That the cops shown more restraint in BLM case is good.

The political roles being different is key factor - ICE wants to kill and this administration wants them to kill. It makes them feel manly.

Frankly, the theory that armed forces would step back is absurd. They are cowards, but they are not afraid to kill. They are so afraid of everything that they are more likely to kill

And other side are people with moral limits. People who are not afraid and are showimg courage every day, but not murderers. And ICE knows that.

No one in ICE fears life ... they fear being emasculated.