Me, personally, today? Nothing. I do other things to promote awareness, specifically on the topic of sexual slavery and human trafficking (mostly women, not always), and am involved, though not as much as I'd like to be. But perhaps that's your point. It has nothing to do with setting aside one day. What I do think the day does (or may do, I'm no expert) is brings about awareness and a reminder, which is the first step in bringing about change. If we don't know about it and don't talk about it, we can't change it. You are right, change requires action. But action requires awareness and knowledge. Awareness doesn't always lead to action, I know, but it's the first step.