Hopefully this will prevent anything like this happening again:
https://www.dailymail.co.uk/news/art...-WhatsApp.html
If parents use a legally checked code of conduct when posting comments, there should be no more incidents that give rise to accusations of bullying, harrassment etc or of breaking the law with regards to malicious communication issues.
It's a shame that so called adults need this in order to put their point across without being impolite, disrespectful, making libellous comments, unfounded allegations etc.