Calls for change arrived at the doorsteps of Ottawa's police command centre Wednesday night -- chants from protestors who said police abused their power during last weekend's G20 summit in Toronto.

"We're here to send a message to the police that that's not acceptable and we're here to call for a public inquiry over the weekend," said Noah Stewart.

"It was totally out of line," added Kevin Dooley. "There's sort of a psycho cop mentality here."

Seamus Wolf said he was peacefully protesting at Queen's Park in Toronto.

"I was violently taken to the ground, arrested and detained for 30 hours," he said of the result.

Pressure for a public inquiry mounts

Toronto police said they'll look at the matter internally. Still, pressure for a public inquiry into G20 police tactics is mounting across the country.

Many legal experts and opposition politicans support the plea. Support is also growing on social networking sites like Facebook.

Although fewer than 50 Ottawa police officers were called to the front lines at the G20 summits, protestors say they needed to have their voices heard at Ottawa's police headquarters.

"I can feel a mother bear rage for people I've never met, from watching them be brutalized," said Melanie Thompson.

With a report from CTV Ottawa's Kristy Kirkup