they killed themselves. that's suicide, not homicide.
I believe they should be held accountable for their actions whatever they may be. Not charged with Murder ,per say ,but some punishment would be in order if they encouraged, or otherwise contributed to someone killing themselves. :)
It's suicide so no.
there have been people who have killed themselves over being bullied or taunted, and an investigation turned up the culprits which caused those people the torment and anguish which later led to their taking their own lives, and yes, some people have even been charged with aggravated murder. There is only so much that any one person can take, and if you go too far, you should be held accountable.