Sari Stein was live blogging the Dawson College shooting that left one woman dead and twenty more people injured, half in critical condition. The gunman was also killed. Unfortunately Montreal has been the scene of two other mass shootings in academic institutions, the Dec. 6, 1989 Marc Lépine attack on female engineering students that left 14 dead and the August 24, 1992 murder of four colleagues by a professor denied tenure.