Magneto's experiences are not only uniquely Jewish experiences of the Shoah, but also as others have mentioned, nothing like what happened has ever happened before or since. These horrible genocides are NOT interchangeable. Marvel has taken great care to show respect to the Holocaust as an historical event and an experience.
Magneto is a Jewish character. It doesn't need any explanation for defense as to how important this is unto itself. His ethnic identity is not up for debate or for exchange. At least it shouldn't be. As I said, it amazes me how tv shows, movies, books, comics seem to think it's okay to replace one minority with another like there's a quota-system and you can't actually add another minority character to a group, you have to replace an existing one. If you can exchange Magneto's ethnic background why not Storm's, or Forge's, or Jubillee's? I don't even understand why anyone would ask.
But as to your original question, Magneto (Max) experienced the full breadth of the growth of fascism in Germany. He grew up in Nuremberg and spied on the Nazi rallies. He saw his uncle nearly beaten to death for having an "Aryan" girlfriend. He saw his pacifist father put trust in the German gov't, and saw the betrayal -- another act of violence. The family witnessed Kristalnacht, fled to Poland and were there when the Germans invaded. He saw the utter destruction of the Polish resistance, the devastation of war. He and his family were herded into the Warsaw ghetto. He lived in the ghetto as people starved all around him, trying to smuggle food to his dying sister. When they realized they were going to be deported to Treblinka, they escaped the ghetto only to be captured and shot on the spot. Young Magneto fell with the bodies of his mother, father, and sister into the pit, buried by other bodies, but his unknown powers saved him. He was captured later and sent to Auschwitz, where he was forced into the Sonderkommando. This is unique to his experience, and crucial to understanding who Magneto is. He helped the Nazis exterminate his own people; many Holocaust survivors called the Sonderkommando members collaborators. History might be kinder, but the members of the squad call themselves "murderers." Magneto has said many times, that he was damned when he was young. He's called himself a murderer and a monster--he helped talk the victims into the gas chambers, telling them they were taking showers. He helped clean out the pyramid of bodies after the gassing was over, he carried the bodies by the thousands to the lifts, and he manned the ovens above, pushing the retorts into the fire. He helped man the fire pits that were opened in 1944; he saw Nazi officers hurl little children alive into the flames, he heard their screams every day.
He was saved from suicide by his beloved Magda, who was in the Gypsy Family Camp with her family. Did Magda ever find out that when her family was all killed in 1944, that he was the one who forced them into the gas chamber? The he was one of the squad that burned their bodies? Did he ever tell her?
Magneto will always be that boy in the striped uniform behind the barbed wire. That's why he's obsessed with power, with making others fear him. He thinks if humans fear him, they'll fear mutants, and not hurt mutants. We know this is flawed thinking. He has no hope. He has no confidence that humans will ever accept mutants. His experiences are so extreme, his sense of loss, of guilt, or horror are who his is. Xavier has tried to convince him, that fear and violence never work in the long run.
When Magneto talks about the fate of mutants, you have to listen to him, because of his experiences during the Holocaust. When he excuses extreme measures -- survival at any cost -- you cut him some slack because he's a survivor. But he's a deeply scarred man--as Xavier knew all along. He's full of rage and pain and self-hatred. As he says in UXM #196, he's done things that can never be forgiven, and he's not talking just about his antics as the costumed Magneto, but his time at Auschwitz.
Please forgive me for linking to my own stuff, but this makes it easier to understand what happened to the Jews at Auschwitz and what happened to Magneto.
https://www.tapatalk.com/groups/cybe...ando-t242.html