From Adolf Hitler's book, My Struggle (1925),
"The sacrifice of the individual existence is necessary in order to assure the conservation of the race. Hence it is that the most essential condition for the establishment and maintenance of a State is a certain feeling of solidarity, wounded in an identity of character and race and in a resolute readiness to defend these at all costs. With people who live on their own territory this will result in a development of the heroic virtues..."
Socialism to Hitler is the idea that for a race to survive, a person must put their people before themselves. For example, a person who takes the loan from the Jewish bank instead of a bank from his own people because the Jews offer a better upfront deal, is a person who put themselves before their own people.
The idea of National Socialism is that in order for a race to survive, it must put it's people first above all else, including the individual. Israel is a National Socialist state. The Jews are actual Nazi's and, just like the Germans pre WW2, it has made them one of the most powerful nations on the planet. In fact, look at any National Socialist state and you'll see that National Socialism beats diversity and multiculturalism every time, Japan, http://www.nationmaster.com/country-info/compare/Japan/United-States/Crime and Israel, http://www.nationmaster.com/country-info/compare/Israel/United-States/Crime