I was drawn into a discussion the other week on twitter by a young lady in Alberta. It was on the subject of the Quebec Niqab ban. I supported the ban, pointing out that 87% of the population agreed with it and that in families that already were fundamentalist, the decision to wear the niqab could hardly be shown to be a choice free of pressure or coercion. Her argument was that we had to accept that it was a free choice, and that forcing women not to wear a piece of clothing was not justified. As we went back and forth she became more and more agitated, sometimes using three tweets in combination to make her argument. I wasn't being disagreeable - just disagreeing. Then suddenly her tweets disappeared and I found I was blocked on her website. 
She could have disengaged at any time just by agreeing to disagree, but she decided instead to return to her "safe space". Particularly disturbing was that she described herself on twitter as a "communications consultant". Go figure.