It was an angry left - a very angry left - that created substantial movement in US politics a century or so ago.

If that left had been less angry and had limited themselves to intellectual deconstructions of power structures, it's a reasonable bet that the power structures would have remained in place.

In fact it's very much a leftist failing to believe that all you have to do is criticise something with enough mature rationality, and it will magically stop functioning, stunned into irrelevance by the power of a clever and insightful argument.

It doesn't seem to work like that in the real world.

As for the anti-semitism - what? Where?