I can't imagine how Shrillary's vaunted war room missed this stuff -- all I can think is that they thought it hit too close to home for them, especially since Bill Clinton pardoned both Weatherfreak and Puerto Rican terrorists. The Clintonistas must have expected blowback if they tried to raise any of these issues. Still, you'd think that some of the media and other Demagogues would have seen the significance of this stuff..... but same thing, no one toward the left of the political spectrum wanted to remind the public of the kinds of scumbags under the bedsheets of the Democrat Party.
Just as likely, the media and the other Demagogues probably didn't have any problem with Ayres and would've befriended him themselves.
They saw nothing wrong with the association.