Whatever your position vis a vis the attacks of Sept 11, 2001- the artwork on this t-shirt is obviously sending all sorts of mixed signals. The comments here reflect that. Often the remarks on t-shirts and bumper stickers offend some group. But there's always a fine line. This crosses that line, imho, no matter who you are.
I live in the south and you can be sure that there are constant "conversations" about the use of the Confederate Flag on t-shirts and whether teens are allowed to wear them into schools. Where I live, they are not.
Not sure where the poster lives that the community allows kids in school to wear swastikas but...
a tempest in a teapot and it was stopped sensibly and with good understanding from the creators who are, btw, children~! They've done better than some of the comments represented here.