President Lincoln granted citizenship to all slaves.
They did it because they feared that without a specifically enumerated bill of rights that the government could become tyrannical in the same manner in which the British were tyrannical. They believed that rights of people and states should be written and stated officially instead of just being implied since implied things are easy to exploit and maneuver according to your needs.
Answer:
They don't care
Explanation:
Extreme right wing organizations, especially the Ku Klux Klan, chose violence as a means to fight against the civil rights movement because as far as they're concerned black people aren't people, they are objects to be owned and possessed and discarded off when no longer useful. They don't want black people to have the same rights as them, no matter the consequences because they think they're doing everyone a favor.