To “liberaltarians,” force is good if it supports one of their sacred cows, like forcing everyone to recognize and support homosexual “marriage.”
Libertarians who think homosexual “marriage” is a "right" haven't thought it through - government recognition of the as-old-as-mankind social institution of one-man-one-woman marriage in no way requires government recognition of fabricated N-man-M-woman "marriage."
(Stossel's right about marijuana, though.)