There is absolutely no doubt that mainstream liberal media in Canada and Europe have over the years suppressed stories dealing with serious problems caused by immigration. It wasn't till September 15, 2015 that the very first article appeared in major Canadian media exposing these problems in Europe. It was Margaret the Great (Wente),who else, that wrote the  "Sweden’s ugly immigration problem" http://www.theglobeandmail.com/opinion/swedens-ugly-immigration-problem/article26338254/
And here is a quote from that column: "Yet Sweden’s acute immigration problems scarcely feature in the mainstream media. Journalists see their mission as stopping racism, so they don’t report the bad news. Despite – or perhaps because of – this self-censorship, the gap between the opinion elites and the voters on immigration issues is now a chasm."
There is more coverage now,but you will still be hard-pressed to find similar articles in some other papers.We all know which ones I am talking about...