I doubt any of them had heard of Alinsky, let alone read his book, before BO. I would be surprised if any of them have yet. Why should they? They are anti-Semites, after all.
This is just plain hateful. And, we may need to dip into a more classic vocabulary to illustrate and draw attention to this kind of timeless evil.
The SDS and Weather Underground partnered with Black Panthers and Black Nationalist groups back in the 1960s and 1970s.
Common blood.