Let’s be real here. What could climate protesters do that wouldn’t get them bad attention? History has shown: Nothing. There is nothing they could do that wouldn’t get them bad attention. In Germany, they even got cussed out for blocking private jets.
Face it: The powerful do not fear retaliation from the masses if they vilify climate protesters. The protesters cannot win the PR battle. So all they have left is publicity stunts. And as far as publicity stunts go, plastering stones with water-soluble paint is about as tame as it gets.