Political activism meets consumerism: a dilemma

I’m mad about what Mump is doing everywhere but what it’s doing to Canada really bugs me; I guess I feel kind of like Canada is one of my best friends. I grew up near the Ambassador Bridge in Detroit. I spent most of a year in Montreal. And I love how defiant they’re being toward Mump.

I’m not yet personally worried about money.

Should I:
-make a point of buying Canadian products to help Canada?
-avoid buying products subject to tariffs because that would mean less tariff money in Mump’s pocket?
-avoid buying anything unnecessary at all, in the hope that not participating in the economy will put more pressure on Mump?
-some combination of the above?
-something else?

I suppose I should make a poll but I am interested in people’s reasoning, not just their votes.