They are starting to attract a lot of attention in France: at every protest, several plainclothes police officers are spotted deliberately vandalizing public infrastructure; the reason for these acts is not yet known.

Older guys, only 2 of them, dressed in unfashionable gray/blue outfit. Trying to light a trashcan on fire in a totally unstrategic place amidst largely peaceful bystanders. Real rioters come in hordes, dressed in black, using fire as a means to put up barricades in the front of the protest. It's...