The Ku Klux Klan was controversial in the 1920s not only because of its intolerance and promotion of vigilante violence, but also because of its entry into.
Ida Tarbell was the muckraker, she was specially known because of the status she had at time
Forced sharecropping or tenant farming--the black codes created discrimination against blacks preventing them from other jobs or owning land.
The black codes were laws limiting the rights of freedmen and didn't allow for blacks to get land or different jobs. Being land owners still needed labor, free blacks were left with no other option but to continue working the land they had once been enslaved. It led to a system of debt and cycles of poverty which took generations before blacks saw progress.