@georgeob1,
I'm speaking as someone who was thoroughly pissed at Bill Clinton, but I don't think the situations are analogous.
Bill Clinton engaged in consensual sex with women. He was married, he was a politician, he was (with Lewinsky)
President -- it was idiotic at best and extremely sleazy at worst.
But what Cain is accused of is more about sexual
assault. Pushing unwilling women's heads in his lap.
It's not all proven yet, so it's also not analogous that way -- Clinton definitely had sex with that woman. We still don't know exactly what's up with Cain, but it looks like there are a row of shoes ready to drop rather loudly.
Meanwhile, I think the black thing is a complete strawman.
What about Anthony Weiner, or Larry Craig, or Elliot Spitzer (to name just a few)? They certainly got reactions for their misdeeds.