Unifor is encouraging people to boycott GM cars made in Mexico in response to the GM plant closures, primarily Oshawa. I agree with them, I've never bought a Mexican-built car and don't ever plan to. I buy American cars built in the US or Canada or foreign cars built in their respective countries or the US or Canada. I would also be boycotting the Korean built GMs too.
https://www.google.com/amp/s/amp.freep.com/amp/2676910002
https://www.google.com/amp/s/amp.freep.com/amp/2676910002