[AnotherUnixGeek]

“Something needs to be done about that person who sold that gun because if he would have never bought that gun, this would have never happened.”

This is a terrible tragedy that ended the lives of two children, but the problem here is not "the person who sold that gun". Why was a child even able to access that gun? Where was the adult supervision?

[E. Pluribus Unum]

“Something needs to be done about that person who sold that gun because if he would have never bought that gun, this would have never happened.”

Pretty sure he didn't get it through an FFL source.