This term for a type of obstructionist comes from the Dutch for "freebooter" or "pirate"
Meanwhile, Dutch colonists in the West Indies called the pirates in... [DOC] [TLE] filibuster (n.) - Online Etymology Dictionary [PAR] 1580s, flibutor "pirate," especially, in history, "West Indian buccaneer of the 17th 
... probably ultimately from Dutch vrijbueter (now vrijbuiter) "freebooter," a word 
which ...