That’s not the goal, from what I’ve heard. They are not trying to get public support. They are simply trying to make life so difficult for the public that the public will demand the politicians do something to stop the protests. And for the politicians, the easiest thing to do (the protestors hope) is to give in to their demands. That’s the strategy that the “stop oil” idiots in Europe use, and the pro-Gaza crowd seems to have adopted it.
Behind the scenes at the organizing meetings, you will see the guiding hand of the Revolutionary Communist Party.