This Paris demonstration video is quite interesting. The protestors appear to be disabling some kind of contraption.
Hazarding a guess, it may be some camera rig the government has which records licence plates etc. A free nation shouldn’t have these anyway. So its interesting to see the French protestors disabling it, if that is what it is.
Hopefully those more knowledgable about France can explain what is taking place in that scene, and others in this video.
More videos from the protest: