I peruse the Democrat Underground on occasion.
Antisemitism is the norm. It’s not just tolerated, but encouraged.
By some odd coincidences in my life, I get emails and texts from a few yeshiva bochers and young rabbis who sometimes lurk on FR and DU. While they are dismayed sometimes by Jew-hate on FR, they confess that DU frequently makes them almost physically ill, which is made worse because they realize DU represents people who are actually in power in the government.