That's because Hizzoner really doesn't understand the difference between those things, obviously due to his IQ of 14 - all colorful fabric thingies of any sort are now banned in town, because Da Mayor can't tell the difference between a yellow ribbon and a swastika.
On the one hand, I feel bad for the townspeople, because they're saddled with a mayor that makes mongoloid chimps look positively Einsteinian, but on the other hand, I don't - they went out and elected the dumb SOB, and now they're paying the price.
Correct me if I am wrong, but isn't the pink ribbon in support of eradicating breast cancer? So, eradicating breast cancer is on the same level as Naziism?