In recent decades, the NFL has simultaneously become an athletic, financial, and cultural powerhouse - and a league that can't seem to go more than a few weeks without stumbling into a scandal. Whether it's about domestic violence, performance - enhancing drugs, racism, or head trauma, the NFL always seems to be in some kind of trouble. How can a sports league operate this way? Why do the negative stories keep happening, and why don't they ever seem to affect the bottom line?