as a teacher
I see cyber bullying as being a bit different to what I and others experienced at school 30+ years ago. The herd mentality - eg you're fat, ugly, black, smelly, spastic, etc etc - is not just in the schoolyard but is out there for your idiotic mates - and for that matter any fuckwit anywhere in the world - to copy , emulate and laugh at because nobody deletes it.
In the past it was deleted by the new day (which may have been as unpleasant as the day before) but now, yesterday is still there for the fuckwits of this world to see, laugh at and contribute to.
So yes, laws protecting people ( children) from social media bullies need to be there and need to be enforced. The trouble is no-one really knows what they should look like and who should enforce them.
My 2c worth - keep the change