What makes the comparison between Hitler and Trump so poignant is not just the rhetorical marginalization of groups, lifestyles or beliefs, but the fact that both men represent their personal character as the antidote to all social and political problems.
Neither Hitler nor Trump campaign on specific policies, beyond a few slogans. Instead, both promise a new vision of leadership. They portray the existing political systems as fundamentally corrupt, incompetent, and, most importantly, unable to generate decisive action in the face of pressing problems.
Both use their personal biographies—or rather, the highly edited accounts of their personal biographies they present to the media—to conjure up a new style of politics, which is based neither on expertise nor on detailed policy proposals. Instead—they suggest—their own personal 'struggle' shaped them into—supposedly—authentic leaders, capable of overcoming adversity through sheer force of character. In this scenario, democracy has less to do with representative institutions than with a leader who is intuitively 'in tune' with the sentiments of the people.