Please answer the following question: Generate a question about the following movie plot: The first half of the film begins before the Civil War, explaining the introduction of slavery to America before jumping into battle. Two families, the northern Stonemans and the Southern Camerons, are introduced. The story is told through these two families and often their servants, epitomizing the worst racial stereotypes. As the nation is torn apart by war, the slaves and their abolitionist supporters are seen as the destructive force behind it all.The film's racism grows even worse in its second half, set during Reconstruction and featuring the rise of the Ku Klux Klan, introduced as the picture's would-be heroes. The fact that Griffith jammed a love story in the midst of his recreated race war is absolutely audacious. It's thrilling and disturbing, often at the same time.
A:
What racist organization do we see on the rise in the second half of the film?