Of the three main political parties in Canada, the NDP have always had the least to lose. They have always been the party that was least likely to run the country. Even though their leader today is the most Prime Ministerial that they've had in their history (sorry Jack), that isn't likely to change in 2015.
Therefore, when the NDP leader speaks about issues in a way that contradicts the mainstream party line (the story line used by the PC's and the Liberals), I tend to listen more closely. They seem to have a more clear idea of what it means to be truthful.
I began to listen even more intently in 2006 after Jack Layton (aka Taliban Jack) suggest the U.S. and their allies begin to talk and negotiate with the Taliban shortly after Afghanistan was invaded. Harper and his gang (and of course all the major newspapers who happen to be owned by Harper supporters, except The Toronto Star of course) went after him and lambasted him publicly for being so naive. Some even used the word treasonous.
I'm not sure how long it took but of course, eventually, as Jack suggested, the west began to talk to the Taliban.
Now, when Thomas Mulcair suggests the Ottawa shooting was a criminal act, I listen. In fact, it seemed unlikely it was a terrorist attack all along but I kept an open mind. True to form, the PC's and the Liberals are attacking Mulcair for being.... well, honest.
There's only one story around this Ottawa shooting. It wasn't the gun or the gunman's access to it; it wasn't the over-the-top funeral of the guy guarding the Peace Tower; it wasn't the gunman's criminal past; it wasn't Harper showing emotion (although that should have been front page news in itself); it was HOW DID THIS GUY GET INTO THE HOUSE OF COMMONS WITH A GUN?
Care to answer that RCMP?