 At the age of eight, his family moved to Ville-Emard and later on his family moved to Ville Jacques-Cartier, now part of Longueuil, where he spent most of his teenage years.A member of the "Rassemblement pour l'indépendance nationale" political party, Rose's involvement with radical groups began in 1968 after meeting Jacques Lanctôt, a member of the FLQ, during a rally against Canadian Prime Minister Pierre Elliott Trudeau at the "Saint-Jean-Baptiste" parade.During what became known as the October Crisis, on October 5, 1970, members of the FLQ's Liberation Cell kidnapped the British Trade Commissioner James Cross from his Montreal home as part of a violent attempt to overthrow the elected government and to establish a socialist Quebec state independent of Canada.