I wonder if that would serve any purpose at all.
Such an event would draw more unwanted attention to suicidal people, which would involve even more judgment and idiotic arguments against the cause.
As a form of protest, it would backfire and slow the process of making euthanasia legal.
As a show, or a way of sending a message or making a statement, it would be a worthy spectacle to witness all the shit storm that would come afterwards. Though it wouldn't do much more..
Sounds completely counter-productive and undesirable.