[novembermike]

He's referring to the fact that a major catalyst for the Nazis gaining power was German communists engaging in what was practically open warfare with them.

[honestoHeminway]

They sold themselves as law and order - in contrast to the civil war there militant wing fought with the communists in the street.

Thats the real danger here. A hysteric left and some right outliers creating the basis for continuously improving anti-terror laws. Oh.. too late.