They could also blow up oil pipelines and actually hurt the industries, but that’s apparently going too far. There is no “right way” to protest because the government barely tolerates even “legal” protests, and loves forcing them to places where nobody can even notice them.

Let them do their thing. Nobody’s getting injured and the fact that it’s in the news and people are discussing it means that it’s working. And remember, they could be doing much worse things and choose not to.