Obviously it is hard to imagine what relatives of those killed in Nottingham this week are going through.
But surely the best thing to do is give them privacy, not arrange public events and expect them to attend and even speak?
I guess some might say it's their choice to attend. But if you organise an event and give them the option to attend, they might agree while not being in a fit mental state to make a decision. So therefore best not to have an event.