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Have you ever gotten any of those to respect you after hanging out with them? Ever made them change opinions on any matter?

almost always. even if they didn't change their minds right way, they did a few months after.

On what kind of subjects? Like you got them into liking Trump, or change their stance on gun laws? They came up to you a month later an just went; "I'm an objectivist now! I like rational selfishness!" or "Jared Taylor really has some good and valid points" or " yeah, climatechange is BS" Really? Or more like "Yeah, you were right..Ace Ventura 2 actually IS better than 1" :O

economics (free market), politics (anarchy/libertarianism) and religion (atheism)

I find that hard to believe, but if you say so! :) Those people can't be total morons to begin with, or you are very charismatic. Very well then. Odin approves of your answer.

I run a freethinking group in my country. I got to learn through practice.