I think what your problem is is that you're mistaking common sense for good sense. Good sense, which you and I have, is based on logic and examined intentions, whereas common sense, what most others have, is based on the more primitive aspects of emotion, usually fear and self-preservation. Most people don't examine how the things they say and the way they say them effect others, and others react emotionally, that is common sense. Our society is not intellectual enough for those of us who actually use good sense to have a majority and force those with only common sense to step it up.

So remember, the next time you're thinking "I can't believe he/she/they just did/said that, it's common sense to..." it is not common sense, it is good sense, which should be common sense but isn't.