I think you were right the first time, that it started in 1995. -- or even 1994, the morning after the big GOP congressional victory, when the implications were sinking in on Clinton and his crew of stooges. That's when Slick made that "Nazi time" remark -- which wasn't casual or off the cuff; Clinton stage-managed even his lip-pouts.
And I don't think it has a psychological basis, but an Alinskyite one -- remember, Slick and Beast were SDS from the get-go, all the way back in college; and remember Beast's long-held senior paper at Wellesley, about Alinsky.
This is about propagandistic demolition of public paragons and rallying points, in accordance with Alinsky's nasty little Red cookbook.
Also, whatever year it was that Rush had the TV show, he was showing lots of embarrassing clips of liberal idiocy, Joycelyn Elders' comments about masturbation, etc. It was an embarrassing time to be a liberal. The anti-Rush hysteria is a little like Puritan prudery. They don't want scandalous stuff about them aired.
Hillary sparked the panic in 1998:
(from http://en.wikipedia.org/wiki/Vast_right_wing_conspiracy ):
The Today Show interview
"Allegations that Bill Clinton had an affair with White House intern Monica Lewinsky, and then lied about it under oath, first made national headlines on January 17, 1998, when the story was picked up by The Drudge Report. Despite swift denials from President Clinton, the clamor for answers grew louder. On January 27, 1998, Hillary Clinton appeared on NBC's The Today Show, in an interview with Matt Lauer.
Matt Lauer: "You have said, I understand, to some close friends, that this is the last great battle, and that one side or the other is going down here."
Hillary Clinton: "Well, I don't know if I've been that dramatic. That would sound like a good line from a movie. But I do believe that this is a battle. I mean, look at the very people who are involved in this they have popped up in other settings. This is the great story here for anybody willing to find it and write about it and explain it is this vast right-wing conspiracy that has been conspiring against my husband since the day he announced for president."
The "get Rush" strategy is a subplot of the Vast Right Wing Conspiracy meme started by Hillary, also an Alinsky follower.