It appears certain elements of the Reading Festival crowd have failed to heed the warnings from organisers to stay on the right side of the law.
It's taken only three and a half sets for Reading's rioting contingent to claim its first victim - Panic! At The Disco singer Brendon Urie.
Seconds into the band's early afternoon set, a bottle was hurled from the crowd which connected with the singer's head.
Urie collapsed into a heap to the obvious distress of his fellow band members and the set was stopped for several minutes while medics and roadies checked if the singer was ok to continue.
Then, putting two fingers up to the moron who threw the bottle, the band launched back into their opening song 'The Only Difference Between Suicide And Martyrdom Is Press Coverage'.
The band also played a cover of Radiohead's 'Kharma Police' and 'I Write Sins Not Tragedies' with Urie's face still visibly swollen from the bottle.
Our man on the ground said: "I've never seen anything like it at a festival. There weren't many other bottles being thrown and then this one just arched towards the stage and caught him right in the face. He went down like a sack of shit."
Panic! At The Disco were the fourth band to play Reading's main stage, following sets by Towers Of London, Fightstar and Dashboard Confessional.
Despite Towers Of London releasing homing pigeons from the stage, the opening day at Reading had been far from a peaceful affair.
Hear about the almost as riotous start to Leeds Festival here and stay posted to VF for more news from both sites throughout the weekend.