The Left in Canada (NDP, Green) want to boycott Israel, and many citizens extend that to anti-Semitism.  In Sweden the Left government has discriminated so much against Jews that they are supporting the Right wing party.
Many of these extreme Rignt wing parties have risen in Europe due to the Proportional voting system.  This is what happens with Proportional voting.  Extreme, narrow interest, religious parties get a foothold.  With FPTP, we have national broad interest parties.
Anti-Semiticism has been growing in Europe for at least 15 years, and it is growing here in Canada as well.  It's not coming just from the Right;it's also the Left.