Newspapers should just report the facts and let the readers sort it all out.
But, but, but...don't you understand? If they just gave you the facts you might think or do something they don't like!
Doesn't that make sense to you? /s
Yes, but there's always a lot of selectivity in fact-reporting. The Columbine killers were most likely from families that were at least nominally either Christian or Jewish, but I don't recall the MSM specifying their religious background in regular reports (in-depth article like NYT magazine features, etc., probably did). In that light, I find it hard to see an MSM conspiracy to minimize the threat of extremist Islam, in the fact that few articles about this incident mention the family's religion.