The Roman Catholic Church, still fighting to remain a viable entity at the beginning of the seventeenth century, fervently sought to re energize its base. The Counter Reformation struggle fueled the extroverted visual style of the Baroque, whose all-enveloping theatrics could draw in and capture an audience.
Caravaggio, a painter of immense genius who also suffered from a volatile temperament, reportedly once killed a man during a drunken argument and ended up fleeing for his life as a result.
(Something about his paintings always makes me squeamish. Anyway, he is definitely not for the faint of heart).