@DW2 This is indeed the issue with the guaranteed right to assembly. It means you will have a population who will never be willing to cross the line to take any further action beyond protest.
When people in countries without this "right" to protest do protest, they do so knowing that they are already past the point of no return. When you can always back out, many people will.
I don't think this was the intention of the Founding Fathers, but here we are.