Germany didn't have the internet, wiki and a bajillion websites with everything far right to far left and in-between data so the brainwashing is of a smaller percent of weaker people who were weak minded in the first place.
Hitler was elected based on his lies. Well, like trump.
But unlike hitler, today's world is far more advanced in communication.
I believe the internet for trump did influence far more people than would have without it however. So, the internet is a two edged sword.