go into nazi "free speech" website
talk about left wing views or say hey guys maybe you're a bit extreme
get banned or ostrasized

nice free speech lol

Absolute freespeech doesn't exist, though it's possible to get a nice balance sometimes. Typically anonymity is the most useful for it because you can't be held accountable to what you say, which is what free speech actually is: Freedom from consequence.
And the second principle being That there's at least one person to listen (so shouting into a void doesn't count :P )

That's the best simplest definition I can come up with, morality wise it gets complicated but that's up to the individual to decide.