One of those guys said "because you are getting robbed", just right after the asian boy asked him "Why do you want my bag?". So it's a clean robbery.
The guy with the gray hoodie and black mask said "You ruined my jacket... IMMAH FUKKING KILL YOUUU". After that, he starts punching him. This is an attempted murder.
The only reason they stopped beating him, was because he was able to escape.
I see no reason at all why those fucktards shouldn't be charged as adults and recieve a heavy punishment.