Our world is, has been, and always will be populated by two factions: those on the right side of history, and those that oppose them. Over time, thankfully, the right side prevails – the world is a more tolerant and enlightened place today than it was even a single year ago.
Pushing social norms toward the light requires strength and dedication from the enlightened to expose injustices to the masses that are ignorant or indifferent to their existence. Just as critical as that strength and dedication, though, is discretion.
The righteous seek to educate those clinging to notions of propriety that are innocuously outdated or shamefully based in hatred that need to be converted. The only effective way to convert them is challenging their prejudiced views and opinions with facts and sincerity. The best approach is to nullify all their counterarguments by systematically revealing their flaws; the change will not be instant, but given time to reflect the wrong-minded will hopefully shift their worldview.