1957 Canadian election
... that when a teenager tore up a photograph of Canadian Prime Minister St. Laurent as the PM spoke, the ensuing fracas was seen as a turning point in the 1957 Canadian election?
... that when a teenager tore up a photograph of Canadian Prime Minister <a href="./Louis_St._Laurent" id="mwD4Q" rel="mw:WikiLink" title="Louis St. Laurent">St. Laurent</a> as the PM spoke, the ensuing fracas was seen as a turning point in the <b id="mwD4U"><a class="mw-redirect" href="./Canadian_federal_election,_1957" id="mwD4Y" rel="mw:WikiLink" title="Canadian federal election, 1957">1957 Canadian election</a></b>?