The worst are the hordes of people at a concert that hold their phones over their heads and film the whole show while they watch it ON THEIR PHONE. Not only do they obstruct everyone else's view of the show, but they're at the fkn show, watch the damn show. If you wanna watch it on a screen, stay home and stream it on YouTube. Also, how many of them are going to go home and actually watch the whole show again on their phone? None.