The protesters said they want the UN to be held accountable, but the organisation denies any responsibility.
Brian Concannon, director of the Institute for Justice and Democracy in Haiti and one of the lawyers who has filed claims against the UN on behalf of cholera victims, put the blame on the UN.
The protest was staged a day after Bill Clinton, the UN's special envoy to Haiti, said that a member of the global organisation's peacekeeping force was probably responsible for bringing cholera to the Caribbean country.
But Clinton added that the peacekeeper may not have known that he was doing so.
Studies have suggested that peacekeepers from Nepal probably introduced the disease to Haiti for the first time, months after the January 2010 earthquake.