I basically am against discrimination on the basis of one's employer for the same principles behind any individual freedom. I might not like your work, but I respect that you are a taxpayer in the same state as me and as such contribute to our ability to meet in relative peace in the first place, and I won't condone organized discrimination against you on the basis of your legal work. If anything, I will petition the state to make your work illegal.
I disagree. It's dangerous to let people slide because "they're just doing their job". People "just doing their job" are the enablers. Without them, none of the really serious man-made tragedies of history would have been possible.