The Oktoberfest doesn't take place on a peace - on this piece of pebbles it isn't so peaceful sometimes. Bavarians often tend to fight hammering their heads with steins.
Reference story:
Lawyer: "Defendant doesn't deny that he hit plaintiff over the head with a stein so that the skull broke. But as the expert witness testified plaintiff's skull is extremely weak. So I ask the jury: What has a man with such a weak skull to do in a beer tent?"

Cheers
Wilfried