holocaust deniers?!

[stereorob2.0]

as im shure some of you know, there are some people think the holocaust didnt happen? how in the hell can someone say that?? please explain cause it shure as hell happend!! i live in palm beach county with alot of jewish culture around me, and i from time to time, i still see elderly people with the deathcamp tattoos from aushwitz etc. why would anybody in there right mind EVER deny the holocaust happend? do they really belive this or do you think they are just stirring the pot.?