Sept. 17 (Bloomberg) -- Wall Street firms will be the target of a nonviolent demonstration in which organizers say they want 20,000 people to participate with tents, kitchens and 'peaceful barricades' in lower Manhattan.

Dubbed '#OccupyWallStreet,' the goal of the protest scheduled to start today is to get President Barack Obama to establish a commission to end 'the influence money has over our representatives in Washington,' according to the website of Adbusters, a group promoting the demonstration. Organizers want participants to 'occupy' the area for 'a few months,' according to the website.

'People have a right to protest, and if they want to protest, we'll be happy to make sure they have locations to do it,' New York City Mayor Michael Bloomberg said Sept. 15 at a press conference. 'As long as they do it where other people's rights are respected, this is the place where people can speak their minds, and that's what makes New York New York.'

The New York City Police Department is aware of the protest and is 'planning accordingly,' Paul Browne, a spokesman for the department, said in an e-mail.

NYSE Euronext, Deutsche Bank AG and Bank of New York Mellon Corp. are among firms with operations in the area. Bank of America Corp., JPMorgan Chase & Co., Morgan Stanley and Citigroup Inc. are among financial firms whose main offices aren't on Wall Street.

Rich Adamonis, a spokesman for the NYSE, Duncan King of Deutsche Bank, and Bank of New York's Ron Gruendl declined to comment on the demonstration.

Protests also are planned for financial districts in Madrid, Milan, London and Paris, according to a bulletin from the National Cybersecurity and Communications Integration Center obtained by Bloomberg News. The NCCIC is part of the Department of Homeland Security. Chris Ortman, an agency spokesman, confirmed the bulletin's authenticity.

The mayor is the founder and majority owner of Bloomberg News parent Bloomberg LP.

To contact the editor responsible for this story: David Scheer at dscheer@bloomberg.net .