The vote happened in favour of the kirpan, despite fierce opposition from the Bloc Québécois. In the 2006 Supreme Court of Canada decision of "Multani v. Commission scolaire Marguerite‑Bourgeoys" the court held that the banning of the kirpan in a school environment offended Canada's Charter of Rights and Freedoms, nor could the limitation be upheld under s. 1 of the Charter, as per "R. v. Oakes". The issue started when a 12-year-old schoolboy dropped a 20 cm (8-inch) long kirpan in school. School staff and parents were very concerned, and the student was required to attend school under police supervision until the court decision was reached. In September 2008, Montreal police announced that a 13-year-old student would be charged after he allegedly threatened another student with his kirpan. However, while he was declared guilty of threatening his schoolmates, he was granted an absolute discharge for the crime on April 15, 2009. The World Sikh Organization representative Jasbeer Singh, who had involvement in the Multani Kirpan case, represented the WSO who had called on the Calgary Telus Convention Center for an apology on another kirpan case. In the Calgary stadium, a Gurdas Mann concert in 2009 had to be shut down after Sikh ticket holders had refused to remove their kirpans. Jasbeer was reportedly furious due to the case having occurred after it was proven that the kirpan was allowed to legally be worn in public areas due to the Multani v. Commission scolaire Marguerite-Bourgeoys case. Concert promoter Nirmal Dhaliwal revealed his intent on suing the centre due to the lack of revenue brought by the case. The Royal Canadian Mounted Police came under fire when they refused to let turbaned Canadian Sikh officers join their service. In doing so they had indefinitely banned all RCMP officers from wearing a turban, requiring them to wear the standard and traditional RCMP headdress. The ban was a result of the activism of a petition leader named Herman Bittner, who maintained that he was preserving history rather than discriminating. The ban was lifted in 1990 and turbaned Sikh officers were permitted to join the RCMP.