Alcohol fueled violence. Listen to the women slurring her words, the guy's eyes, his body posture just before he slap's, despite her drunken state she could have been a player in the fight yet all three ( The Police and the two Security guys ) engage the male only. Leaving her, there back's as a target for a knife or other attack from behind. Shes then allowed to hold the cop slapper, while being abusive to the officers. Again an opportunity for her to be an active player, slip him a knife, or other weapon. Should have cuffed her for sure. Never underestimate any player in the game. Did he have it coming, 100% yes ! Should they have been more mindfull of her, ditto.