If you meet the Buddha on the road, kill him.
Why?
Also, I'm starting to think Buddhism is the single most peaceful and complete religion on earth. Although Buddhism is more of a philosophy than a religion.
There is also a form (Shintoïsm, I think) which Worships Buddha as a god-like being. During a certain period (around 1600 and such) of civil war in Japan, the portugese arrived. When eventually a not so fond of christians guy won the wars, he put all the portugese priests on the boat, let the boat float, and then put it on fire, burning or drowning the Portugese. (The Dutch were allowed to trade with Japan during that period, either because they were not really fond of christians either or they could swim, which kinda ruined the execution method).