Hi oomis.
You ask a great rhetorical question that has prompted me to give an opinion that Obama is largely responsible.
When a United States president, for the first time in history, shows such a strong level of contempt, disrespect, and aggressiveness to Israel and all things Jewish, he fanned the flames of the nutjobs out there, around the world, who are the antisemites.
And when you add the the fact that the American media, has for too long, taken on a bias of anti Jewish and anti Israel propaganda, I hate to say it but such a mixture is not too far removed from the original ingredients leading up to y’mach shmoe Germany.