My mum sent me this video about how people in the Bronx were violently removed with the false promise of relocation. No disturbing images. Also the way he holds up his arm was pretty common for politicians, and it is probably not a Nazi salute.
I’ve seen a few documentaries that featured Moses. He had a very specific vision for NYC, and was instrumental in the New York World’s Fair (hence the relocations) that indirectly led to the construction of Disneyland.