That’s because anybody who isn’t a snowflake is shadow-banned. You can post anything you want, but nobody sees it.
Comments supportive of Trump are DELETED or CENSORED so that YOU never see them. Farcebook, Twitter and most political websites want everyone to think everyone else HATES Trump therefore YOU should hate him too! I noticed this YEARS ago, starting with AOL/HUFFPOST articles’ comments sections, then YAHOO, etc..