You'll probably learn about him more in school. It's a big part of history even though it caused a lot of violence.
Actually this is false. Hitler never ordered for concentration camps, or more commonly know as "death camps", to be created. The radicals of the Nazi party turned these labor camps into death traps. Hitler only wanted to separate the Jews, and other minority's, from the "normal" population. It was the people in charge of the camps that turned them into what they are known as today. Also, Hitler not only targeted Jews, but gypsies, the mentally handicap, the physically handicap, and anyone who wasn't a "normal" white German.
It's fine. The majority of the people I have met don't know this either. My world history teacher taught me it.
The last time I got taught anything about the Nazis was two years ago, and even then, the teacher didn't teach us much about it. She just wanted us to know the more important things. This is now going slightly off-topic though....
Hitler skins are not appropriate, Hitler web avatars are not appropriate, and Minetime in general is not an appropriate place to talk about Hitler. If you have a Hitler avatar, I will delete it. If you put it back, I will ban you. If you're using a Hitler skin in-game and I see it, I will ban you. End of story -- thread locked.