If these kids were about "White Power" or showed actual supremacist bent, that's one thing. If they were about demonstrating American pride, that is entirely another. It seems to me from everything I'm reading that the kids were all about American pride. Nevermind in whose presence they were demonstrating it. The question is, do we disallow it ANYWHERE within our own national borders in order to satisfy those who first allegiance is NOT to America, and if so, since frakkin when? I say, "hell no."
The Left actively and purposefully conflates White supremacy and American nationalism, as if demonstrating American pride within our own borders in the presence of illegal aliens is equivalent to racism. This activism needs to be countered, particularly by children.
It is a sorry thing to say, but parents who are faced with the loss of their school districts to illegal aliens ought to use their children to make statements against this ridiculous nationalism = racism movement through choices in clothing, accessories, etc. Every American kid should be sent to school with a flag pin, a George Washington T-Shirt, etc.