When this did become acceptable?

This video is astonishing. It was taken earlier today when during student protests in Montreal. In it a police officer points his tear gas grenade launcher squarely at a protester — almost touching the guy — and fires it, with the clear intent of harming the protester and making no effort whatsoever to arrest him for anything! This is absolutely, completely unacceptable and unless the sadistic officer involved is identified and disciplined in a serious way it will be difficult to take the SPVM at all seriously.