I firmly believe that each of our own actions has an effect on society, maybe not directly, but thru flow on effects. Take the guy who commented to NotAboutEgo about her knowledge of baseball. Perhaps he had stereotyed all women as not knowing anything about baseball, and NotAboutEgo has changed that perception in his mind. He may now lose his sterotypical idea of women's knowledge of baseball and he may even try to pass that on to others. Whatever flow-on effect that has is a step to changing society, albeit in a very small way.
Society in a way is huge bunch of followers lead by a few leaders. Society is easily misled, so anyone who wants to lead, with positive and sensible actions, regardless how small those actions are, is doing something to change society positively. Unfortunately there are too many negatives which influence the followers in society......totally negative news reporting, concentrating on all the bad things, TV shows such as Big Brother, heck even in sport the bad things are given the most publicity. I could go on. We could all help change society if we react positively and deflect the negatives (hard I know). For every one person we can influence, there could be countless others influenced by the flow-on effect.
"A hot dog at the ballgame beats roast beef at the Ritz." ~Humphrey Bogart
No matter how good you are, you're going to lose one-third of your games. No matter how bad you are you're going to win one-third of your games. It's the other third that makes the difference. ~Tommy Lasorda