From 1928 to 1971, pier 21 in halifax served as the front door to Canada, the entryway through which more than 1.5 million people passed. A legion of volunteers, medical staff, and immigration personnel kept vigil at the...From 1928 to 1971, pier 21 in halifax served as the front door to Canada, the entryway through which more than 1.5 million people passed. A legion of volunteers, medical staff, and immigration personnel kept vigil at the pier from one decade to the next, greeting and directing the human tide that flowed and ebbed through its doors.