I think that in order to change the world we must first start with ourselves.
Change starts within.
If you are offended but say nothing, it's pretty much the same as condoning. Tell em with a smile on your face that you are going to wash their mouth out with soap the next time you hear that word come out of their mouth.
They'll get the point, you will have done it with a smile and you will have made a small difference in the declining morals in our society.
But nothings going to change if you don't make change happen.
Reminds me of that saying if you don't vote, than you don't have much of a right to complain about the leadership.