From my position of University Senate President the issues are clear. I am in favor of academic freedom without reservations. That means freedom for positions I disagree with.
The Salaita case is interesting for several reasons. We find people lining up behind Salaita because
a) they share his politics
b) they stand for principles of academic freedom and basic contract fairness
c) a and b
People opposing Salaita might do so because
d) they oppose his politics and / or don't think much of his scholarship and don't care deeply about academic freedom, or think academic freedom is for me but not for thee
I would love to talk about how abhorrent some of his twitter posts are, or might seem to many, or my misgivings about him being hired in a department of American Indian Studies. I won't do that because I am in category b.