Showing that you care can make a world of difference. "Being there" is how some might refer to it.
My mother used to remember the birthday of every single person she knew. She would give presents to some and send cards to some, but to so many there would be a telephone call. It wouldn't be a long one necessarily, but she would wish them a happy birthday. She showed by her call, that she cared.
When you hear that someone is ill or hear of someone's death, a brief call (for someone you are very close to) and certainly a card, conveys the same message - "I'm here for you. I care."
How about the race for mayor or the court ruling on marriage equality or the campaign to raise money for the church improvements? Show you care. Get involved. Become a part of it. There are certainly many ways to show you care. You might have some of your own suggestions. Showing the world you care is really a good thing!