Cyberbullying is inappropriate and can hurt a person. What is the best response? Save and document all the evidence.
Respond immediately and forcefully.
Threaten the bully with a prosecution.
Always be polite and well-mannered.

- Always be polite and well-mannered

- Save and document all the evidence (and report to an adult or authoritative figure)

Explanation:

While responding immediately and forcefully may seem like the quickest way to go and show your support for the victim and put an end to the bully's actions, it will put a target on your back as well as the victim's if no one else speaks up with you. If you threaten the bully with a prosecution, what makes you better than them if you are going to respond to the negativity with negativity? Plus, you would be giving them the response that they are waiting for and desire.

In my opinion, you should always be polite and well-mannered, setting a good example for the trolls and bullies and everyone else.

But the best thing you can do is to save and document all evidence of the event, then report it to a higher authority or adult.