Which celebrities do you know of who have used their fame and resources to help refugees and the displaced?

Isn't it obvious that the United States is not a model of a successful economy, but rather one where only the rich thrive? A good example is people working multiple jobs just to survive, with no savings, doesn’t that show the system fails most?
Do you believe there are more cases like the one involving Renee Good where the Trump administration has smeared the victim?