That would be changing beliefs. because motivating a peace activist to action would mean motivating them to protest peace.
weakening their attitude would result in a sedentary and apathetic response. and strengthening their values would be making them even more of a pacifist. therefore you most change their beliefs before you go forth with any of the other options.
hope this helps!
The Constitutional Convention. I don't remember what it was fixing, I'm sorry!
