Saw this opinion piece about the Toronto chair-thrower and it seems like it is not an isolated incident.
Toronto’s chair thrower is a symptom of a bigger problem
I haven't heard of specific incidents happening in Halifax, but I can't imagine it only happens in Toronto. I do recall many years ago being outside Brunswick Towers on a Saturday night after attending a party for a friend who lived there, and hearing bottles smashing around me. I didn't stick around long enough to figure out where they were coming from, but it was from above...
I know that it is like the gun argument that says people are the problem not the weapon. But... if you can't rely on people to behave responsibly, what do you do? Require heavy screens to be installed around balconies?
Looks like she has been charged:
Woman charged for allegedly tossing chair over condo balcony
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