Because you live in a bubble that serves as an echo chamber, and uses oppressive tactics on anyone that doesn’t think like you:
In recent months I’ve had occasion to gently suggest to people that Trump was running even or better than his opponent.medium.com
But it is nice that you’re asking.
If you are in education, you might look into why on college campuses across the land, they silence unpopular views. Shut them down. Speakers are invited… then turned away.
When you understand this one example clearly, and have identified who is doing it… you’re going to be way ahead of most people.
BTW, Medium is to a large extent, part of the bubble. It never served me up a single “pro-Trump” article in the many weeks leading up to the election.
Medium is intellectually isolated.