How did they persist in the face of that kind of adversity?

These are stories of persistence: A single mother who is trying to get some help. Campaigners who don't know when to quit. A fight against segregation. Cafeteria workers who are trying to get the attention of management. A student who won’t take no for an answer. A Senator who won’t say yes. What’s amazing is that all of these stories intersect over time and space.