In 2009, the now toothless National Organization for Marriage unleashed a $1.5 million ad campaign against marriage equality. The center of this campaign was a television ad entitled The Gathering Storm, which attempted to shift the narrative to the idea that marriage equality will cause discrimination against those who disagree with it::
The backlash against this ad was immediate and vicious. Its campy nature was parodied constantly by "response" commercials. I've included several of them below. However, the long term effect of The Gathering Storm cannot be ignored because it formed the building blocks of the "religious liberty" argument which is now used in various attempts to justify anti-LGBTQ discrimination.
Still, the parodies are hilarious.
and here is a serious one: