Violence escalated the next night during the final hours of the concert as Red Hot Chili Peppers performed on the east stage and Megadeth performed on the west stage. A group of peace promoters, led by the anti-gun violence organization PAX (later renamed the Center to Prevent Youth Violence), had distributed candles to those stopping at their booth during the day, intending them for a candlelight vigil to be held during the Chili Peppers' performance of the song "Under the Bridge". During the band's set, the crowd began to light the candles, with some also using candles and lighters to start bonfires. Hundreds of empty plastic water bottles that littered the lawn area were used as fuel for the fire, which had spread to both stages by the end of the performances.