Police response to the shootings was heavily criticized . The first police officers to arrive at the scene established a perimeter around the building and waited before entering the building , During this period , several women were killed . Subsequent changes to emergency response protocols led to praise of emergency responders ' handling of the Dawson College shooting in 2006 in which one woman was killed by a shooter . In that incident , coordination amongst emergency response agencies and prompt intervention were credited with minimizing the loss of life
Dawson College shooting
Dawson College shooting
École Polytechnique massacre