On a July night in 1990, the booming sub-bass of the track "LFO" by the group of the same name rattled the steel frame of an old Sony warehouse on the industrial outskirts of Gildersome, Leeds. Inside, a euphoric crowd danced, oblivious to the fact that the reverberating sound was muting the buzz of police helicopters circling above. This event, known as the Love Decade rave, was not merely an illegal party; it was the violent focal point of a burgeoning cultural war. The night would end not in a peaceful sunrise but in a three-hour siege, a full-blown riot, and one of the largest mass arrests in modern British history, with 836 people taken into custody.