Just been catching up with this thread and there are some great insightful posts.
As has been said, singling out a specific group when talking about bullying can elevate that group to a higher status, that bullying someone within that group, is worse than bullying someone who isn't.
I've been horrified quite frankly, to read about what's been happening at your GD's school Mollygoand hope that she's alright
.
For teachers and other staff members to feel they cannot properly protect the victims of these bullies, for fear of accusations of being transphobic, is a sorry and frightening state of affairs.
As Martin Luther (not ML King) said. Society is like a drunken man, having fallen off one side of the horse promptly climbs back on and falls off the other side.
This is an example of how attempting to redress the balance, to ensure that a minority group in society is not discriminated against and treated unfairly, can result in the 'rights' of that particular group superseding not just the 'rights' of other minority groups, but the rights of anyone who is not a member of that particular group.
Whatever form bullying takes and for whatever reason victims are singled out, it is wrong.