Maybe I'm just too young to remember, but I've always been baffled by how the Clintons cause conservatives to literally start frothing at the mouth, even more so than Obama. The chud hate for Obama is understandable because he masqueraded as a progressive reformist. But, its more confusing with the Clintons because they are both right wingers.
Bill Clinton destroyed the last vestiges of the New Deal movement within the Democratic party and made it a fully neoliberal party, slashed welfare spending with Republican support, deregulated banks, and signed the crime bill which led to the mass incarceration of black people.
Hilary Clinton is a right wing warmongerer who made racist dog whistles during the 2008 campaign. Hell, she didn't even come out in favor of same sex marriage until like 2013.
I think a lot of it was the shock joke era of the 80s colliding with NAFTA and the Regan Revolution.
Clinton was the first Democrat to really capture the totality of the black vote, which means Republicans lost any incentive not to go hog on the racism. Talk Radio was taking off as a means of distributing propaganda, so the "thought leaders" were the kind of oafs that lived to hear themselves talk.
And finally, you had the Clintons themselves. Lying, traitorous, bigoted, greedy, horny, neoliberal climbers. They did so much shit you could justifiably hate. Super predators School Uniforms. Operation Desert Fox. Graham-Leech-Biley. There was so much to go crazy over. They were like a family full of lightning rods.