I was going through the recent deaths section of Wikipedia [I am an editor there and got my start with that section] when I discovered the passing of Mildred Loving, a woman who, with her husband, struck down anti-interracial marriage laws throughout the United States in 1967. Without her, I would not have been allowed to marry my husband.
She seemed like a nice woman who fell in love with someone who happened to not be of the same race, and they just wanted to be together. She didn't set out to be a pioneer, but she had to fight in court for something that a lot of us take for granted and, for that, I am grateful.
I wish I had known about her sooner; I would've loved to have written her a letter just to tell her "thank you."