Dozens arrested in anti-capitalism May Day protest in Montreal
Police arrested 84 people, including 27 on criminal charges, and used tear gas to disperse demonstrators at a night-time protest in downtown Montreal organized by a local anti-capitalist group called CLAC.
Hundreds of people gathered at at least three different locations around the city, well before the protests officially got underway at 7 p.m.ET.
The group called on protesters to cause the "maximum disruption possible" to businesses downtown.
However, the majority of the crowd were people carrying anti-austerity messages with no intention of vandalism or violence.
By 7:10 p.m., police had already declared the demonstrations illegal and began ordering protesters to disperse.
http://www.cbc.ca/news/canada/montreal/dozens-arrested-in-anti-capitalism-may-day-protest-in-montreal-1.3058316
That's it, that's all it takes now. No pre-approved permit, so the police decide your freedom of speech is an illegal activity.