If they're cracking down on the people gluing themselves to random objects/highways and, as is described in the article, assaulting others with rocks, then I see nothing wrong with that.
Seriously being treated as a terrorist and 30 days of jail for maybe glueing yourself on a street as polictical protest, is a normal fair reaction in your mind?
Yeah, no, sorry, I'm not gonna side against the protestors. What they should truly do is halt the whole economy, to really make the people in power feel it.
Anything less than that and it can just be ignored.
We are all doing better than the "glue yourself to things" people because they're moving things backwards, turning people against climate action, distracting from climate issues.