London Mayor Sadiq Khan has been warned he must take "further and drastic action" over violent crime.
Members of the London Assembly Police and Crime Committee expressed concern about the lack of detail around Mr Khan's plans for a Violence Reduction Unit.
The scheme aims to use the public health approach to crime, successfully used in Scotland, where police, housing, health and care workers join together.
But in a letter to the mayor, committee members said:
They claim the VRU's funding from surplus business rates is "far from sufficient to resource the unit over the long term", and called for a move away from the focus on young people, knife crime and gangs.
Members want the unit to tackle a broad range of violence and the particular issue of adverse childhood experiences.
There is evidence that exposure to domestic violence as a child and being excluded from school can in the worst cases lead teenagers to kill.
In a letter to Mr Khan committee members called for the VRU to:
- Tackle all kinds of violence including domestic
- Focus on prevention, especially adverse childhood experiences like domestic violence or abuse
- Focus on school exclusions
- Call on social media companies to take down all content that explicitly calls for the use of violence
- Use a similar approach to the Prevent counter-terrorism strategy
A spokesman for the Mayor of London said: