The Second Force Act that became a law in 1871 placed management of national elections under the authority of the federal government and certified federal judges and United States marshals to manage local polling places.
On the other hand, the Third Force Act allowed the president to use the armed services to battle those who collaborated to deny equal protection of the laws and to eliminate habeas corpus only if necessary to enforce the act.
The Congress permit President Ulysses S. Grant to to declare martial law, impose heavy penalties against terrorist organizations, and use military force to suppress the Ku Klux Klan (KKK).
Ever since the Congress passed the KKK Act, it was the first piece of US legislation that made individuals and states punishable under federal law for hate crimes or depriving citizens on the basis of race. President Ulysses S. Grant used the Act to challenge Klan activity, most frequent in South Carolina.
The KKK quickly grew from a secretive companionship to a militia group altering the federal government's progressive Reconstruction period in the South.
The KKK were involved in terrorist attacks against African-Americans and white Republicans at night, giving intimidation, destroying their property, assault, and murder to accomplish its aims and influence their goal at upcoming elections.