Well, as a historian I'm sure you know that the "Dark Ages" weren't actually all that dark. Proper historian don't even use that term. "Dark Ages" was a term coined by a 14th-century Italian author named Petrarch who really liked the Roman Empire, and thought everything after Rome's fall just sort of sucked. Source.
The so-called Dark Ages of Europe were not nearly as grim and brutal as some people think. Warfare was heavily limited due to the small size of armies necessitated by feudal government, women were treated better than previous times by a wide margin, and Dark Age serfs had shorter workweeks than Americans today. Oh, and life expectancy was about 50 years.
But i think its impossible to cure prejudice toward middle ages. Its always fun to ahve people talking about witch hunts, absolute rulers and horrible torture then say "Yes, the renaissance was realy a horrible age, good its gone."
(I know middle ages also weren't that nice, but in those three categories renaissance has far higher "score".)