David Staples: Candidate not allowed to criticize Don Iveson at mayoral forum? Huh!?

At the final Edmonton mayoral forum this week, moderator Dave Robertson tried to shut down candidate Steve Shewchuk after Shewchuk criticized incumbent Don Iveson’s handling of the NAIT LRT traffic fiasco. 
It was one of the strangest things I’ve witnessed in covering the news in Alberta for more than 30 years. A candidate not permitted to question and criticize the incumbent on his record at a public forum in a civic election? That makes no sense.
The odd turn of events st