This is total speculation: The world is in a very bad place right now. We see country after country going nearly bankrupt. Jobs are scarce and the unemployed seem to stay that way.
So who can they blame? I just read, in that other thread, about that priest in Greece blaming the Jews for all their economic woes. Father McCoughlin is a Jew-lover compared to that piece of filth pretending to be a religious man.
So, they blame the Jews, as always. And even if a person isn't Jewish at all, they label him a Jew and blame him just the same. (That filth labelled Rockefeller as a Jew.)
When things go bad, a skapegoat is needed. And it's usually the Jews who they skapegoat.
So this is why I believe there is an increase in anti-Semitism.