Capital in the Twenty-First Century (200 words or more)

Prompt: 

According to the film, why did inequalities between the rich and poor grow over the past forty years? How did growing inequalities shape politics in Europe and the United States today?

Instructions:

The prompt is designed to inspire and steer your discussion post.   You are expected to address the spirit of the prompt rather than develop a point by point response. The prompt is not an exam question.