Fifty people have died in London within just three months.
There has been much concern about how violent crime can be tackled.
To discuss this issue we spoke to three people with a great interest in resolving things.
Shaun Bailey, who is a member of the London Assembly and a former advisor to David Cameron on Youth and Crime.
Eliza Ribeiro founded the charity Lives Not Knives, which works to try to get young people away from the temptations of gangs and into education, employment and training.
And Dr Simon Harding is a criminologist from the University of Westminster and the author of the book author of The Street Casino: Survival in violent street gangs.