That right is, presumably, something you revoke when joining a ‘open-minded and tolerant’ community -- something that both Mozilla and OkCupid asked their employees to do.
That’s why, to justify shunning from someone within that group, you need to qualify supporting Prop 8 as abhorrent: something outside of Free speech.
I’ve posted a few comments already, so I feel the need to clarify my position: I have an opinion; I never shared it with anyone, ever. What I know however, from knowing many people on any sides of however you want to split this, is best said here: