ftmpch

You seem to have misread the comment you’re replying to. It has two "not"s in it, and you missed one of them.

https://www.theguardian.com/uk-news/2025/mar/29/parents-arrested-by-hertfordshire-police-for-complaining-about-daughters-school

Maxie Allen and his partner, Rosalind Levine, said they were arrested and detained on suspicion of harassment, malicious communications and causing a nuisance on school property.

…

The school said it had “sought advice from police” after a “high volume of direct correspondence and public social media posts” that they claimed had become upsetting for staff, parents and governors.

It certainly wasn’t just “complaining on WhatsApp” that they were arrested for.