What Hitler was responsible for doing will always have an effect on our world.
Besides the political issues brought up with others who have commented here -- issues that are global, there are so many personal issues.
People focus in on the 6 million Jews that died unjustly in war. War was always meant to be fought by the military - and exclude the civilians. There were also 6 million Gypsies, Gays, Eastern Europeans - anyone that did not fit the Aryan mold or better yet - had a mind of their own.
You are probably to young to remember a piece from the New York Times in circa late 1970s about children born to parents of the Holocaust. They tended to have memories that did not belong to them, and nightmares of atrocities that also did not belong to them. For all intensive purposes, it did -- the stories were so vivid, they took on new life for new victims.
And please, while on topic, let's discuss Israel. After The War, it was owned by the British. The British were tired of being attacked by Palestinians and Jewish Refuges. They brought their problem of "What are we to do with Palestine?" to the new United Nations. (Which, we are all amazed has lasted as long as it has because of the failure of the League of Nations, but really doesn't seem to do that much in the world.) It was the United Nations that turned the land over to the refuges (after all, who in Europe wanted their Jewish neighbours to return) and for the first time in our lifetimes, a Jewish nation was born.
One thing not mentioned here was one effect on post-World War II Germany. It is mandated that they must take refuges from political countries, age 18 and under and care for them. That is right - clothe them, house them and educate them. The expense is on the German government -- and it is one of the reasons Germany has a growing population from the Middle East. It also is quite a way to observe the new prejudices that are emerging there.
You keep asking questions like these and some of us wonder why? Is it a school project and you haven't a clue how to begin doing real research? (BTW, just because a person gets the "Best Answer" here - does not mean it is necessarily the "Correct" answer -- many times, I am sorry to say, it isn't. Or are you asking just to stir the pot?
P.S. When you write a question/reply here - there is a "Check Spelling" you can use. It is a very useful tool, you might consider using it. I'm still trying to figure out what " iuhumane event" is? And another thing, in English when we mention proper names, such as religions and nationalities the first letter is capitalized. Which sometimes you do and sometimes you don't - please try to do every time.