We're a global species. Technology made us become larger than the sum of our parts. It is our moral duty to police those opinions that are so polarizing, or so devoid of empathy, that they do harm.
"Policing" can be milder than all out censorship. Personalized feed algorithms can push us into filter bubbles, there's no reason why they can't police toxic views by injecting counter arguments or labeling (not censoring) rampant misinformation as such