There was a large anti semitic movement, a eugenics movement in the sciences, intolerance to gays, zenophobia plus other factors. What I read pretty much painted a picture where Hitler was heavily influenced by their propaganda. Germany was forced to pay reparations from WWI and the economy completely tanked. There was even hyper inflation. The public was a little desperate and Hitler offered them the promise of taking Germany back. Many should have already pointed out parallels between this and America but it’s different, Trump is not competent to lead, Hitler was. Americans on the whole are not involved in hate, zenophobia and general intolerance when many in that part of last century were. America still has a strong and evolving economy. Eugenics is no longer practiced or followed. Social media and the internet make secrets hard to keep and the transmission of information is instantaneous. We are all players now when in that time many were legitimately ignorant of the unfolding situation.