According to the news, the Prosecutor in that FL. county wants to prosecute the old man because he continued to shoot at the fleeing robbers after they got out the door . .
My thought on that was, according to the video, the one guy with a gun still had it, so he was still dangerous as long as you could see him . .
Lesson to be learned here? Carry a real pistol (9mm or better) instead of a .22 or .25 . . And learn to shoot it better!