“We might have called ourselves the Liberal Party. We chose to call ourselves the National Socialists. We are not internationalists. Our socialism is national. We demand the fulfilment of the just claims of the productive classes by the state on the basis of race solidarity. To us state and race are one.”

“Socialism is an ancient Aryan, Germanic institution.”

From 1923 Interview with Adolf Hitler.

They’re just seeing that these ideas are popular and co-opt them, as usual. It’s not difficult to bastardized anything with a bit of lies and sell it to a layman.