The guy couldn't get in then tried to break into the police car.School doors were locked. The SRO was on station, doing the job he was paid to do. That's the proper way to protect the children, as per our current procedures.
I wonder whether the perp was a parent or family member trying to get to his kid in school for no bad reasons. He was not armed, he might not have meant harm to children. But then the altercation with the SRO ensued. Will we find out what that was all about?
No goodwill earned IMHO.