Before WW2, how were people (especially young men) introduced

Conscription and experience in army

Blue haired biddies weren't around everywhere to police everyone's thoughts, you could have a casual conversation about the coming race war and the Jewish lobby while casually sipping a beer or taking a book out from a library

>>2734804
Preaching in beer-houses where disaffected losers gathered to blame their problems on various groups.

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>>2734831

You say this in a cheap attempt to ridicule classical reactionaries but what you describe literally happened in Viennese coffehouses where disaffected losers gathered to blame their problems on various groups

>>2734804
They were the mainstream already. A "nation" was inherently a supermajority of one ethnic group with a baseline culture. A nation-state was the government representing those people.