No one believed Moishe when he returned for several reasons. Moishe was homeless, so he didn't exactly fit in with the upper class. While people didn't mind his presence, they didn't necessarily notice him. So if no one really knows he exists, they aren't going to believe him when he returns and tells them of all these horrific things that he witnessed. Everyone ignored him and tried to pretend it wasn't happening. No one thought the war would last as long as it did, so none of them thought that anything like Moishe was talking about could be possible. He was telling them the people about the things that he saw, like little babies being thrown in the air and getting shot. No one wants to believe that anything that disturbing and sick could be happening in the middle of the twentieth century. If people had believed Moishe things could have been very different. The people could have taken action. They would have been able to hide. They could have warned countless others. Things could have turned out a lot better.
-Wade Taylor, Natasha Alexander, Don Polcyn, Shelby Real, and Seyd Perkins