For the sheer randomness of his behaviour:
Yes, OK - a puppy may have been damaged, and that's a bad thing, but it doesn't sound like it was hurt very much, if at all. Damn it all - I wouldn't mind being thrown at a German biker gang if it got me in this news story.
Summary to save you clicking:
Puppy thrown at German biker gang
A German student "mooned" a group of Hell's Angels and hurled a puppy at them before escaping on a stolen bulldozer, police have said.
The man drove up to a Hell's Angels clubhouse near Munich, wearing only a pair of shorts and carrying a puppy.
He dropped his shorts and threw the dog, escaping on a bulldozer from a nearby building site.