During Covid there were MN posts that it was the Jews trying to control the population via microchips in the vaccine and memorably something about trying to turn us into robots and something about a Jewish sex cult running the world.
Before Covid MN was full of the ‘Israel lobby’ paying everyone to undermine Corbyn and pretend that Labour was riddled with antisemitism while on social media you could see Jewish MPs targeted, the Holocaust denied, absolutely vile stuff coming from accounts of Labour members and even MPs.
Antisemitism has always been around on MN.