Norwegians reported greater support for immigration than before Breivik attacks (from 72 % to 82%).

[RZM]

1. I guess this is a temporary manifestation of the backlash against Breivik and his killing spree

I think the numbers will eventually go back to where they were. You frequently see polls shift after a major event and then return to normal. H-Dub was riding high after the Gulf War, yet less than two years later he was trounced at the polls. Same thing with W. After 9/11 support for him increased and there was wide approval for the Afghanistan war. Yet the 2004 election was close and now even Republicans have turned against that war as terrorism is less of a concern than it was in 2001.

Same thing in Israel after the Rabin assassination. But only a few years later, Israelis voted in Ariel Sharon.