the intensity and nature of the antisemitic wave that erupted in Europe last summer during Israel’s Operation Protective Edge in Gaza indicated cooperation between networks of extreme leftists and immigrants from Arab countries that hold extreme Islamist views. In the United States, the main growth came in the form of anti-Israel activity on college campuses across the country which had antisemitic overtones.
Moreover, according to the report, the internet, social media and mobile applications have become favorite and effective tools to spread antisemitic messages and propaganda, like the infamous antisemitic screed “The Protocols of the Elders of Zion.”"Antisemitic overtones"? That's putting it mildly. Here's how I would characterize it (i.e. Zionhass, the Jew-hate of our time): The Left is in bed with the Islamists, and both are intent on destroying Israel in order to "make the world a better place." In other words, today's version of Hitler's "redemptive anti-Semitism," made all the more dangerous because of Facebook, Twitter and the rest.
Update: Here's an example of how "the digital lynch mob" operates.