OTTAWA, Ont. -- A woman was expelled from the House of Commons Monday after exposing her breasts.

The group FEMEN Quebec claimed responsibility a few minutes later on social media, saying the act was meant to highlight its opposition to the government's Bill C-51.

FEMEN says the antiterrorist bill criminalizes freedom of expression. One of its provisions makes it criminal to publicly applaud a terrorist act.

The wide-ranging bill would give police much broader powers and allow them to detain terror suspects and give new powers to Canada's spy agency.

The Conservatives introduced the legislation in January and have said it will make Canadians safer and give police and security forces the tools they need to meet terrorist threats.

Those opposed to C-51 say it would infringe upon Canadians' civil liberties and right to privacy, especially online.