Obama served on two boards with Bill Ayers and launched his political career at at fundraiser at Bill Ayers’ house. It is quite reasonable to call that “palling around” with the unrepentant terrorist that Bill Ayers is.
The word “terrorists” got a lot of play at the time because people assumed that Sarah was only talking about Bill Ayres. Well folks, What would you call Bernadine Dohrn? When I learned about plurals in grade 1 I was told when referring to 2 or more people it was appropriate to refer to something with an ‘s’ at the end of the noun.