Americans can understand if you phrase it differently.
"You know how sometimes, you go to a big event, and the parking is so far away from the event that they have to ferry people from the parking lots to the event using a bus? Well, this is just like that, except you park at home."
So, ICE is scared that aggressive untrained people will use deadly force against them, and that afterwards the government will do nothing about it?
That's pretty much how everybody else has felt about ICE for a long time.