The wrong guy initially got tossed (won't he have an interesting day of explanations tomorrow?), and then security had to boot the whole row because they weren't sure who threw it. Wristband Man, you're a hero. You sat back and watched while a fellow fan got tossed out on national TV for your stupid act. The real beer thrower is still at large, having slipped out of the park while the "fall guy" was getting the boot. Police are definitely looking for him now.
Let's try to resist the temptation to blame all Chicagoans/Cubs fans... Most are probably appalled by what this idiot did.