As a mom of an almost 8 year old with behaviour problems (related to ADHD, which we are working on with a variety of methods and just based on having had the cops called 3 times is not as bad off as this one)… I’d say justified.
Putting myself in her shoes:
My son has done this, or something very similar, and had the cops called THREE times… I’d be seeking some serious help for my son, up to and including an in-hospital program after the first time and be insisting on it after the second (and if he acts like this in school how is he at home??). If he’s seeing someone regarding this trauma, I’d be asking for any and all options available to me. I’d also be worried about CPS and what they are thinking/doing. I’d be worried about them long before this actually.
He is waving something around which would potentially be a weapon and injure someone quite badly easily INCLUDING himself if someone grabs him wrong.
They diffused the situation without giving him more than some short lived pain. They are adults, he is a child even if a stocky one. If he were small you’d grab him and sit on the floor and hold him so he can’t do anything until he calms down, much harder to do with an 8 year old child.
I wouldn’t be happy that this had happened, far from it, but how much less happy would I have been had they tackled him and he landed wrong on the stick or heck just landed wrong and got something broken.