Agreed, like the cold shoulder shown to white South Africans during Apartheid. Overall, it helped to change national sentiment and led to the end of Apartheid even though it might've harmed some people living abroad who were opposed to the system.

I don't think we've worked out a better way to deal with this yet, and it will always be a factor of the way populations are broadly responsible for their governments in democracies and even semi-democracies.