Former Canadian Prime Minister Stephen Harper is urging Liberals and Conservatives to 'come together' against forces and policies at home and abroad that threaten the country's independence and unity. Harper addressed the public at an event on Tuesday where his official portrait was unveiled on Parliament Hill. »»» Subscribe to CBC News to watch more videos: http://bit.ly/1RreYWS For breaking news, video, audio and in-depth coverage: https://www.cbc.ca/news Follow CBC News on TikTok: https://