Well, understand that these guys came from the FSU. Because of Israel's stupid Law of Return even people with minimal connection to Judaism are entitled to citizenship. So a lot of Russians end up emigrating to Israel, sometimes falsifying documents to demonstrate Jewishness. Often they just use that as a stepping stone to somewhere else, like the US or Canada.
And yeah, a lot of residents of the FSU are virulent anti-Semites. The kind of people who think Israel manipulated the U.S. into the Iraq War.
