Why is global anti-semitic violence up, when general violence is down?

Kevin Drum reports an anomaly:

…here’s the rate of anti-Semitic incidents in the U.S., as tallied by the Anti-Defamation League. What you see is a peak in the early 90s and a decline ever since. This is exactly the same thing that you see in rates of violent crime in general. In other words, as violent crime fell, violent crime directed at Jews also fell. This makes sense.

But the global picture is quite different. Partly this is probably due to the fact that the worldwide numbers come from a different source (the Kantor Center in Tel Aviv) and are tallied up using a different methodology. But I doubt that accounts for the stark contrast: worldwide, anti-Semitic attacks have been on a straight upward path ever since the late 90s. This is despite the fact that violent crime in Europe, which accounts for most of the incidents, has followed a trajectory pretty similar to the U.S.

Kevin also reports that the Canadian pattern is closer to Europe than to the United States.  You also can find some charts at the link.

Are there any reasonable explanations which involve economic factors?