Too many people to stop and arrest. They are in, rob, and out again before the police can arrive. And any police that are there will not be able to stop 50-100 people intent on robbing and punching indiscriminately.
That's what Cloward-Piven is about: overwhelming a system beyonds its capacity to function, so as to force its collapse.
-PJ
Next gasoline bombs.
The UK cops are prepared for that as well, but they have this stupid idea that you have to let the criminal hit you first. They are brainwashed.