A Musebox

"Darth Malak had a planet destroyed by orbital bombardment in an effort to kill one Jedi. Who managed to escape. Exar Kun, who used to be a Jedi before he let pride and arrogance get him into trouble, managed to somehow destroy a couple of planets with supernovas. Most Sith aren't on that scale. But yes, most are bad people." Malak and Kun were the first people he could think of off the top of his head for destructiveness he could use as an example.

Okay, yes, there was Vitiate too, but he thinks his point has been made.