Bullies used tools such as facebook to harass people

Six Nevada middle school girls arrested over 'Attack a Teacher Day' Facebook event | News.com.au
“Facebook has become quite the trend and quite the place to harass people and to threaten people and it needs to be understood by the public and students that this is a serious matter and we're not taking it lightly,” Carson City Sheriff's Deputy Jessica Rivera told the paper.

In this case it was stopped but bullies use tools such as facebook to bully other kids every day.
What we need is an effective policy worldwide to decrease bullying and that will only be accomplish by educating people.