Such a sad, needless tragedy. The killers were dead inside a long time before they killed this Chinese student.
Some people are on the road to ruin before they’re even 10 year old. With intervention, a change of environment, or role models some find their way out of that dark tunnel.
Some of these people are surrounded by others who have given up on life getting any better, so they take their unfounded anger and envy out on others.
Dreamers?