![The Agenda with Steve Paikin (Video) show](https://d3dthqtvwic6y7.cloudfront.net/podcast-covers/000/035/911/small/the-agenda-with-steve-paikin-video.jpg)
Summary: The Conservatives launched an attack ad against newly elected Liberal Party leader Justin Trudeau, provoking a backlash on social media over the negative tone. David Herle from the Gandalf Group sits down at The Agenda to discuss the efficacy of attack ads in politics.