Hitler succeeded because everyone outside Germany was sub-human, anything not German was fit only to serve. Women were fit only to bear children. It was a simple philosophy that worked. Hitler's ideology removed the necessity of communication and collaboration. It stimulated Germany out of its rut, since all can jump on the Rambo wagon.
Violence attracts a weakened society.
Hitler knew this instinctively. Every street-corner runt who is leader of the pack knows this. Because force reaches down into the last member and last corner of the realm - its message is not lost on children and animals. It needs no analysis. It is irrevoc-able.