How so ?
In my experiences in real life. Many on the left have trouble distinguishing the country of Israel, and Jews in general. It's a clever way of being anti-Semitic, and having the ability to deny it and claim one is referring to Israel. There was a documentary of blatantly anti-Semitic incidents at Concordia university around 2002.
https://www.youtube.com/watch?v=sYUVsDfapb8