Milne first ran for the Liberal Party of Canada in the 1972 federal election in the riding of Peel — Dufferin — Simcoe , west of Toronto . He was defeated by Progressive Conservative Ellwood Madill but prevailed in a rematch two years later in the 1974 federal election . In the House of Commons of Canada , Milne served as Parliamentary Secretary to the Minister of Communications from 1976 to 1977 and Parliamentary Secretary to the Minister of Indian Affairs and Northern Development from 1977 to 1978 . He also served as chairman of the Ontario Liberal caucus . Milne advocated for gun control while an MP following a 1975 shooting rampage at Brampton Centennial High School , in Milne 's riding , that left three dead and 13 injured
Brampton Centennial High School ,
Brampton Centennial Secondary School shooting
Ross Milne (Canadian politician)