Who is Hitler and what did he do

Hitler was one of the most terrible and inhumane dictators of the 20th century. His sick intention was to rule the world and to wipe out all people he considered to be subhuman beings like Jews, gypsies or mentally underachieving persons (over 6 million people). Unfortunately many Germans fell for his and his followers demagogy and hatred. There is not enough "positive" to make up for all the destruction and harm he caused on this planet. The war he started and fortunately lost caused the split of Germany and of entire Europe into to political blocks.