A judge has given the green light to proceed with lawsuits against the City of Montreal over bylaw P6.
The cases date back to the student protests of 2012.
Over 1600 people will be represented in the lawsuit, seeking a total $21 million.
Lawyer Sibel Ataogul says the police treatment of the protesters was unreasonable.
"We contend that it's unreasonable to detain these people for 6 hours in the cold to give them a ticket. You know, it's like you get a traffic ticket and they're like, why don't you stand there for 6 hours and you're not going to the bathroom and you're not going to be able to call your family and we're going to send you to some operational centre."
Ataogul says this is only the first of many steps before the case is heard before the courts but the fact that it was authorized, she says, shows the complaints have to be taken seriously.