feral sentinel
Before I proceed, please do keep in mind that 1. I'm not sure if I'm calling it right and 2. I have no clue if the symbol has been used for previous concerts. That said...
Picture this. TØP are performing a concert during The Clancy Tour: Breach. At one point (maybe during City Walls), Tyler/Clancy is knocked down by Nico. The audience is then given some sort of signal to make the symbol with their hands, just like Clancy did in the City Walls video, to defeat Nico. That way, not only does the hand symbol gain more meaning to us (a weapon against Vialism), but we also get the satisfaction of murdering a bishop hehe