"4. Imposing one's political position on others who may feel differently."

You're right that this forum is likely not the proper place for political discussions, but "imposing" is probably not the best word to describe someone who is simply presenting their point of view on a debatable topic. "Imposing" implies the use of force.

I never felt imposed upon when the guys would drop their anti-Bush one-liners (though I did feel compelled to respond ).