A lot of people pushing 'hoax' about Sandy Hook, Boston, Moon landings, etc etc etc are a variety of anti-American disinformation agents. Muslims, communists, etc.

Iran, Russia, China, and North Korea all have active government disinformation agencies, and they are active at this forum and others.

Then youve got the naive followers who further puch the disinformation unknowingly. Many are pot smokers and other drug users and general hyper-paranoid types who arent thinking normally.