No. I get offended every single day by some of the stuff people post. It hurts my feelings, because all of them know i am liberal & they still post very hateful opinions. I never post political things on facebook out of respect to everyone i am friends with. I personally think it's very rude. If you want to discuss politics, join a debate group like i did.
No, though it amuses me to see people I know are friended to each other sit and post completely opposite things as if they know nobody who disagrees with them. The week Obama got the Nobel was especially entertaining.