I always thought of vampires, especially the young-adult ones, as a metaphor for sex - sucking blood, forbidden, taboo. I think they just ooze sex. Vampires are all the big themes in life in one attractive, bloodsucking package.
In the first 50 years of the filibuster, it was used only 35 times. But the last Congress alone had 112 cloture motions filed, plus threats of more. This is the tyranny of the minority.