TORONTO - Civil liberties groups say they'll keep pushing for a public inquiry into police action during the tumultuous G20 summit.

Protesters, journalists and others affected by the June summit are sharing their experiences during three days of public hearings organized by the Canadian Civil Liberties Association and the National Union of Public and General Employees.

The groups say their goal is to pressure Ottawa to investigate what they consider gross violations of Canadians' rights over the course of the summit held in Toronto.

Police arrested and detained hundreds of people after a small group of protesters smashed dozens of store windows and set fire to police cruisers.

Many of those arrested have since seen charges dropped.

At least two class-action law suits allege police mistreated protesters and infringed on their civil rights.

The hearings are being held today and Thursday in Toronto at the Westin Harbour Castle and move to Montreal's Fairmont Queen Elizabeth hotel on Friday.