Liverpool mayor Steve Rotheram says middle-class drug users need to realise they are fuelling the violence which claims the lives of youngsters like Olivia Pratt-Korbel.
The 9-year-old was killed by a masked gunman after a gangland feud spilled into her home last month.
Her mother had opened the door to investigate a commotion outside when the killer's intended victim burst in, and his pursuer followed, letting off shots at random.
