The Outright Libertarians blog, which I just discovered, points me to an amazingly well produced pro marriage-equality and strikingly libertarian ad campaign put together by MassEquality. The campaign is called “It’s Wrong to Vote on Rights,” and it basically argues for limits on how much democracy should be able to limit individual freedoms. Watch the T.V. ads; they are quite moving.
UPDATE: Apparently, the ads were for the recent vote on the proposed constitutional amendment to ban same-sex marriage in Massachusetts. The amendment was voted down in the house, so apparently they were successful!