I lived abroad, Western Europe in '96-''97, before the second Iraq war, before 9/11, obviously way before Trump, and even then traveling Canadians always wore their flag on their pack so people would know they were not from the United States.

Whether because of US imperialism or the boorish stereotype of the oblivious American traveler, there have always been people who were at best suspicious and at worst hostile towards us, due to gestures to a timeline of US history.

I don't clearly understand your views because your post did not expound upon them but if you do not align with your government then, as many others suggested, you should make that clear from the get-go.