Ideally, a new Parliament should have the opportunity to talk about issues of far more direct significance and practical value than keeping even offensive speech such as Donald Trump's out of Canada. And so it's a bit disappointing to see Tom Mulcair pushing that issue.
That said, it's not hard to understand the reasoning behind the push. Since this fall's election, the NDP has made strong efforts to fight discrimination against refugees, highlight the need for action on climate change, for federal involvement in the fight against poverty. And its reward has been...buried or nonexistent coverage of its actual work, coupled with the familiar complaint that it's the NDP's fault if commentators can't be bothered to pay attention.
In that context, it makes sense to look for positions which (a) are likely to draw attention based on existing storylines and (b) set the NDP apart from its competitors in a positive way. And so far, the Trump message is doing that much - and indeed receiving no opposition from Canada's other parties.
In the long run, though, the NDP needs its appearances in the public eye to match its core priorities. And in the absence of the default coverage previously received as the Official Opposition, the task of winning the right kind of media and public attention may be one of the more difficult challenges Mulcair and his team face in the near future.