Druids spent decades studying, passing on most of their teachings orally. They served as judges, historians, teachers, physicians, poets, priests, among other things. There are many older orders, some which practice & live in peaceful & respectful ways, others which thrive on pain & chaos.
The 2nd type is responsible for the human sacrifices of records, most notably the burning of an entire village of people in a wicker cage as a warning to Roman invaders during war times that they were dangerous and unpredictable (therefore not to be threatened). Another sacrifice (falsely accredited to the druids) was a 3-fold death the king would perform in desperate times of war to regain their gods' favor.
Some druids chose to be absorbed into the Roman church rather than face the rampant persecution. There are druids today, though most of them are very discreet about their practice. All the older orders are now completely underground.
at 8:16 AM on Aug. 28, 2010