It’s an easy joke to make.
When there’s another mass shooting, or Trump leads in the polls, or the wrong movie wins Best Picture“>the wrong movie wins Best Picture (remember Crash?), or Trump is an official nominee, or Trump is the actual President(!), it’s funny—kind of fashionable, even—to announce that you’ve had enough and are moving to Canada, or Amsterdam, or Australia, because the country has finally gone insane.
At what point does the joking stop? At what point do you start seriously considering leaving your home country because you’re scared for your kids?