How can society manage unruly youth and prevent group attacks?

We've gone a long ways from "help elders across the road" to some of the situations of human depravity.

Freddi Rivera case in London killed. A group of females, age 15, 17, 17 confronted 75 yr old at bus stop, cornered, punched him, which lead to him falling and dying.

The girls got sentences of 2 years, 4 and 5 years. Don't agree with charging all of them so much, only the one that struck him, irrelevant.

https://www.lbc.co.uk/article/girls-death-man-unprovoked-attack-5HjdDw5_2/

How can society manage unruly youth and prevent group attacks?
Freddie Rivero
Freddie Rivero

#2: Video of boys that attacked a motorcyclist, attempting to steal his bike, phone. Only two of the boys were charged.

https://www.facebook.com/61585408303238/videos/pcb.122147667957180276/1439358448151865

It would not be easy to defend against a gang of thugs, not legally, not safely, not in my state.

Another video/pic of gang attempting to pull woman from car, punching her.

How can society manage unruly youth and prevent group attacks?
How can society manage unruly youth and prevent group attacks?
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