Robert Dziekanski was killed at Vancouver International Airport on October 14, 2007 when RCMP officers used a Taser on him several times.
Mr. Thomas Braidwood decided to adjourn the inquiry into his death until September 22, saying the disclosure of an internal RCMP e-mail will require further testimony. He appeared to be very angry according to CTV News, which described the e-mail as a bombshell. "It suggests officers discussed using the Taser even before they confronted Dziekanski."
Report in 11 Parts and 9 Appendices
Wikipedia has an excellent article about this and some useful links