How can conservatives say Hitler was a leftist/socialist?

[Old Man Willow]

It is common knowledge (to anyone that bothers to read) that Hitler criminalized trade unions and striking, that he privatized business while most of Europe was nationalizing, that his grand idea of welfare for the poor was private charity consisting of funds socially coerced from the rich (Ron Paul would approve). Oh yeah, and he outright murdered his associates who advocated for a class revolution.