After harsh Twitter exchanges, Senate will look at new social-media policy

OTTAWA -- An independent senator is on a mission to get members of Canada's upper house to stop being so nasty to each other on social media. Tony Dean says recent exchanges on Twitter involving senators and their staff have included "aggressive, harassing and, in some cases, bullying" behaviour.Sign up for our Capital Dispatch newsletter, delivered twice weekly to your inbox and every day during the electionDean, a former head of the Ontario civil service, raised the issue during a Senate commi