Abuse can take many forms. Many old people are abused by thoughtless younger people who are supposed to be caring for them. It can range from thoughtlessness to bullying to physical abuse. Teachers can have favourites and scapegoats. I'm sure nursery staff can behave badly also. It's all pot luck.
We all know about the bullying of old people in some care homes; it is very worrying as you approach 80 !!
I personally have witnessed the bullying of children and been advised by a senior teacher on how to handle a disruptive pupil. I was told to grasp a small clump of hair and twist it hard, then when the child shouts out to brush the incident aside with "Oh sorry, look what you made me do" and a kind smile and pat on the back.
No way was I going to do anything like that!
I feel sure that nursery staff will to some extent be like a very few bad teachers, but the facts are that some paedophiles chose to go into nursery jobs, teaching, nursing and the media. And it seems, from reports, that they often come over as charming, kindly, caring people. They are expert manipulators.
Nothing like having baby sitters from your own family and good old friends who you have known for ever.
Must have been difficult for you Gunit, being away from home. I understand that.