Your last point is of critical importance. The populace as a whole is outgunned. Psuedo-militarized police forces and "law enforcement" organizations have us outgunned. Nobody's going out shooing unless they have nothing to lose. And right now, just about everyone still has something to lose. The goal is to keep the population comfortable enough not to riot on the streets.

There's a reason they're targeting the peaceful working class brown people who have families and still have hope that somehow the system will work and they'll be returned to their family. Notice how they're not rolling into the ghettos and trying to clean up the latino gangs where immigrants are definitely hiding. These ICE agents are cowards and bullies who pick on the weak to make themselves feel better.