On 3 November 2005, the United Nations Human Rights Committee advised the Canadian government to allow an enquiry on the SPVM about its mass arrests tactic during political demonstrations. The tactic is a rapid encirclement of as many protesters as possible regardless of how they may have conducted themselves during the demonstration, and is argued to be a violation of their fundamental rights. According to Francis Dupuis-Déri, a political science professor at Université du Québec à Montréal, police officers employ this tactic because of a "deviance" radical political demonstrators pose to media, politicians and police officers themselves. The SPVM was once again criticized in the aftermath of the August 10, 2008 riots, which started due to the shooting death of 18-year-old immigrant Fredy Alberto Villanueva by an officer who alleged that Villanueva was attacking him and his partner while they were arresting Villanueva's older brother. He argued that he was trying to save his partner and himself by firing his Walther P99 service gun on 18-year-old Fredy Villanueva.