All it takes for evil to flourish is for the good people to do nothing. It is true that you can't do everything because you have limited resources and you need to choose your battles carefully. But you can always do something good each day, even small things. It may not solve the world's problems but at least you make a small difference to another person's life. And if everyone do that one small thing for 1 other person, this world will be a much better place to live in. This change starts with you and me, 1 person at a time.