You are completely and totally wrong. There is NO right to have others sell your books. NONE. There's NOTHING in the Constitution (or anywhere else) which confers such a 'right.' As for Namblazon being guilty by association, anybody with a sliver of common sense knows that when you give a (HUGE) platform to a man who promotes evil, you are complicit in that evil. The people who gave Adolph H. a platform in pre-war Germany were just like Jeff NAMBLA Bezos.
I'm not claiming a 'right' in that regard; however, I am saying that in running a legitimate business, which violates no laws, there is nothing preventing Amazon from doing this.
And let's take your Germany metaphor one better - how much worse off would we be if "Mein Kampf" had been censored? If we weren't tipped off to just how bad Hitler was?
So let's get back to my other question: are you ready to go after the publisher and the author of this trash?