late 20th century author attorney mike godwin say online discussion grow long probability comparison involve hitler approach soon though godwin law use invalidate mention hitler effectively work white-wash significant portion 20th century history.who know could see rise holocaust denial election donald trump yale professor take issue say fear make hitler comparisons make us historically illiterate.yale history professor author tyranny twenty lessons twentieth century timothy snyder go far say trump like hitler say lot lessons learn hitler specifically democratic republics fail refusal even talk hitler simply feed intellectual laziness.so way start discussion comparisons point americans extremely lazy history mean one way definitely number one among major nations one ways lazy history soon anyone suggest past might useful say wait exactly therefore go discard way two three second give excuse think history.source business insiderhere video var playerparam 'pcode 'bhdmy6l9g002rbhq6aebziheacdu 'playerbrandingid '6e12e8b3387a44daacfb73afba25a76e 'skin 'config '//player.ooyala.com/static/v4/stable/latest/skin-plugin/skin.json oo.ready function window.pp oo.player.create 'container 'b1mwnzyte6pynvenszds8rjzyvjokmu8 playerparam main reason study history fact fascinate hell learn forebears get wrong well get right clearly hell lot go wrong late part 19th century first half 20th century robber barons great depression rise fascism kill millions people perhaps lazy history need talk income inequality bank big fail mike godwin wildly misinterpret perhaps would silence compare trump white nationalist follow hitler instead neo-nazis actual vote bloc nation press secretary conveniently ignore fact hitler gas six million jews hey least spic get us talk history.featured image via chip somodevilla/getty image yale professor explain exactly need compare trump hitler