The problem you're facing Amanda is that blurring the IC/OOC lines, even for seemingly good reasons, is what leads to hurt feelings, OOC tension and so on because there's no longer that distinctive barrier there. The simple truth is that if you play a character who takes a stand on something, expect to have that stand challenged, expect to get distanced by people who oppose it and expect to hear a bunch of "urdoinitwrong" from people who don't understand that RP isn't about being a textbook copy of a background but about having a vibrant, believable character.
Both of my characters have taken very strong stances about things and been excluded, argued with, attacked, mocked and ridiculed ICly and I've dealt with OOC crap as well. The important thing about the IC/OOC divide is knowing that even if your character despises another character IC, the players can still hang out and have a good time. For example, Malcolm cannot stand Silas Vitalia IC at all, but I personally find the player to be creative, fun and enjoyable to interact with here on Backstage. Malcolm avoided Silas' party because it wouldn't make RP sense for him to be there, but he gets involved in the talks, debates and other things surrounding it.
It's a frustrating situation to have nobody to play with, I know it is. The honest truth is that if your current character is isolated and you simply aren't enjoying it, then it's time to consider a radical, viewpoint changing event to get them to shift (like Tiberious did) or a new character that you can enjoy more and will fit in with the people you're looking to have fun with.