A little late for my return, but here it goes:

Imagine a small, but noticeable political movement in the USA that wants the USA to go back to UK. Let’s say this political movement has surfaced in recent years, with the pro-UK people becoming more vocal as time passes. Then one day, 4 UK-born highschoolers decide to use the UK flag on July 4th. Sure, it might be coincidence that these teenagers are wearing the UK flag on July 4th. Do you really want to risk that this incident will escalate into something else?

Again, as I said in #285, the principal was both right and wrong on his actions.