Pretend to be open-minded to win people over
Being open-minded is easier said than done, and most people aren’t as understanding of different points of view as we’d like to believe. However, faking works too.
Alternatively, while engaging in a conversation with someone about a subject you find insane, be tolerant and open rather than getting defensive or outright calling them out on their ignorance. They are more receptive to your viewpoint and may even begin to agree with you if you seem to be genuinely considering their point of view as valid.