What is the main conflict in Naked Lunch by William S. Burroughs?

In a convoluted and disturbing string of events, a drug addict flees from the police. His journeys take him across the United States and down into Mexico and beyond. On his travels, he meets up with various members of the underground drug and homosexual cultures. Alongside the twisted narrative runs a counter story about the uses of mind control by governments and psychiatrists to manipulate, destroy and direct the masses.