I actually don’t care if they teach you american history in canada or anywhere else in the world. if you are famous it is the responsibility of your team to look up any symbols that are on any type of clothing before wearing it like this is basics
if you take the time to take a quick google search, you can see the historical context behind the flag. Don't wear something you don't know what it represents. If he does know what it means, his now irrelevant ass won't matter, hope he learns from this. Either way he's a dumbass.
Mark was probably my top favorite kpop idol for so long. I'm so disappointed but not surprised seeing how uneducated or ignorant so many kpop idols really are. Let's say he really is a dumbass that really didn't know what it meant, this could've been so easily avoided.