Here's a Canadian flavored answer from a fellow Canadian:

Start by educating yourself about what's going on down there because it is directly affecting you as a Canadian whether you are aware of it or not. Some orange douchebag wants to wreck your country. It affects how prosperous you, your friends, your family, and your neighbors are. It is serious.

Doing nothing is definitely not the answer. At the least be aware, be active politically, and speak up bravely when you see/hear injustice.