Trawl the comment boards and one of the most amusing entertainments is the performance of conservative social media trolls who once so adroitly mobilized to stereotype Stephane Dion as tongue-tied super dweeb and Michael Ignatieff as egghead carpetbagger. Now the show is a frantic Whack-a-Mole effort to find an insulting stereotype that will stick to new Prime Minister Justin Trudeau.