Answer: President Ulysses S. Grant
Explanation:
Reconstruction happened during Grant's two terms of office. The Ku Klux Klan (KKK) caused widespread violence throughout the South solely against African Americans.
By the year 1870, all former Confederate states had gotten readmitted into the United States and were now represented in Congress. However Democrats, majority of whom are former slave owners, violently refused to accept that these freedmen were citizens, whom suffrage were granted by the Fifteenth Amendment.
By 1871 Klan activity was getting out of control, while President Grant and Congress created the Department of Justice and had then passed three Force Acts into law. President Grant and his Attorney General Amos T. Akerman began a serious crackdown on Klan in the South, starting in South Carolina. They were making arrests and convictions, causing the Klan to demobilize and thus ensuring a fair election for 1872.
