Bill C-309 passed with a vote of 153 to 126 in the Canadian Parliament. It will now move on to the Senate.

If it becomes law, mask-wearers at riots face up to 10 years in jail. Those busted wearing a disguise at an unlawful protest could be sentenced to up to five years in the big house.

The sanctions would not apply to those taking part in peaceful demonstrations or protests.

Parliamentarian Blake Richards, who sponsored the bill, says the measure is aimed at targeting the “growing threat” of vandalism and violence.

Lawmakers are particularly targeting the Blak Bloc anarchist group, whose members dress in black and hide their faces with glasses, scarves, and hoods. The group engaged in violence during the Quebec student protests earlier this year.