Fully agree.  As the article said, Nenshi "frequently cuts people off in mid-sentence", which is the height of arrogance, especially in the public sphere, regardless which side of the political spectrum one comes from.  It reminds me that Hillary Clinton quite often did this, too - perhaps another tiny reason that she lost to the orange buffoon, much to Democrats chagrin... although you're not likely to hear HC admitting this fault either. 

Refusing to listen to other ideas, comments and suggestions, and moreover, cutting off those who express those views in mid-sentence is hardly something that should be appreciated, as the original poster seems to suggest.