Have they? I'm pretty sure they haven't done that. I would have thought I would have heard of it if there was really a law passed in Canada that said critcizing Islam is illegal. I'm also quite sure that's not the case in Sweeden or Germany, and it's definitely not the case here in the UK where you have wankers like the EDL and British First pulling their nonsense.
Oh, and the floodgates aren't open for immigration from the Middle East and North Africa. There's an extensive vetting service for potential immigrants and refugees. Even as a white American who ticked all the boxes,I found it difficult to immigrate to the UK. It's pretty much impossible for impoverished people to get into the west except as refugees.
RE: Canadians Speak Out Against Sharia Law and M103