What you said and the way you said it conveys both your ability to express your feelings on the topic, AND be civil.
So many people these days are just saying “Beat that kid” and that sort of response is both low-brow and worrisome.
If I take a parking spot and someone says “That dude deserves to die” that’s one adult waxing violent about another adult. But a to say things like this about a kid ?
I mean what happened ?!
I share your distress over what has happened.