Since my other post got deleted, I'll just say this: This is in poor taste. Let them have their memorial concert without any protest/picketing/policy advocating. Not one person there will see you and your signs and think: "Gee, he's right!". They will all think the opposite, even if they initially agreed with your stance. You will be doing more harm than good if you go through with this.
Roger that. let them have their love fest and maybe they won't piss off any more nuts on what was a private matter that the general public wouldn't give two shits about..