The families of six teens wept as the youths were given a combined sentence of more than six years for their involvement in a violent town centre brawl.
The group, aged between 15 and 19 years old, appeared at Kingston Crown Court today after admitting taking part in a mass fight in Richmond town centre at an earlier hearing.
CCTV footage played in court showed shocking images of members of the group knocking a man to the floor, stamping on his head and kicking him in the face during the early hours of June 13, this year.
The cameras also captured the teenagers punching two other men after chasing them down the road and showed one of the defendants throwing a fourth victim into a moving car.
The court heard the violence started in the Quadrant in front of dozens of passersby.
Each member of the group - Simon Leon, 19, of Barnes Avenue, Barnes, Anthony O’Sullivan, 15, of Calais Street, Camberwell, Charlie Briggs, 16, of Railway Side, Barnes, Liam Pepper, 19, of Limes Avenue, Barnes, and Jack McCullagh and Ramey Sobraj, both 17, from Station Road, Barnes - pleaded guilty to one count of violent disorder in court last month.
Recorder Saunders spent 15 minutes deliberating before sentencing the teenagers to serve between 10 and 18 months at a young offenders institution.
The families of the group wept as the teens were led one by one out of the dock to begin their sentence.
Detective Sergeant Dave Bolton, of Richmond violent and sexual crime unit, said: "This was a vicious attack by a group of youths.
“They attacked one individual and the group then quickly turned upon passersby who came to the aid of that victim.
“Following excellent work from the violent crime team and the safer neighbourhood team officers identifying these individuals we were able to bring the whole group to justice.
“I am pleased that these convictions demonstrate that mindless violence of this nature is not acceptable and will not be tolerated by police."