How did the Ku Klux Klan react to the fifteenth amendment to the US Constitution?

All fair minded people had a positive reaction to the 15th amendment to the US Constitution, with the exception of women who applauded the amendments purposes but felt they were going to continue to be second class citizens. In the South, it was a different story. Hate and racist groups such as the Ku Klux Klan responded with an increase in violence against Afro-Americans. Democrats, whatever their particular individual views were, made political gains as the Klan continued to terrorize Black voters who generally voted Republican. To combat the hate group violence, Congress passed the Enforcement Act of 1870 to appoint supervisors to ensure as best they could, that voting rights were not hampered in states with a bad record on finding ways to disenfranchise Black voters.