The movie does an excellent job of illustrating the evolution of hatred, racism, and xenophobia in the ideologically and emotionally weak. It's easy to "herd" a group of lost souls seeking some place to displace their anger and personal frustration.
After watching the movie, I pondered what the trend might be in hate groups. The Google Elves tell me this:
The chart below of the Dow/Gold Ratio provides a longer historical reference.
When mammals get fearful, they herd. Hate groups provide great shelter and support for the fearful and angry. Keep your eyes open and ears to the ground as this thing unfolds.