Alinsky was a handbook of terrorism, but in the information sphere, in the domain of words and symbols.
When that stops working (to some extent because our side has learned to use it), they will switch to actual terrorism, as described by Lenin and many others.
The tactics of the Baader-Meinhof gang, the Weather Underground and Che Guevara will have a resurgence.
Yep, I believe that is where things are headed.