I don't consider Justin Bieber a representative of Canada. The notion that he's embarrassing Canadians around the world can be used for any country. Every country has stupid celebrities who say and do ignorant things. The fact is the majority of the world will always follow people like that because their hijinks are interesting.
The way Canadians are viewed in the world is great I find. Our tolerance, education levels, culture and economy speak volumes in the minds of the people of the world. Where as Justin Bieber is only a name for an entertainment article.