The exclusion of convicted felons from the vote took on new significance after the Civil War and passage of the Fifteenth Amendment to the U.S. Constitution, which gave blacks the right to vote. Southern opposition to black suffrage led to the decision to use numerous ostensibly race-neutral voting barriers - e.g., literacy and property tests, poll taxes, grandfather clauses and criminal disenfranchisement provisions - with the explicit intent of keeping as many blacks as possible from being able to vote. Although laws excluding criminals from the vote had existed in the South previously, "between 1890 and 1910, many Southern states tailored their criminal disenfranchisement laws, along with other voting qualifications, to increase the effect of these laws on black citizens."5
Crimes that triggered disenfranchisement were written to include crimes blacks supposedly committed more frequently than whites and to exclude crimes whites were believed to commit more frequently. For example, in South Carolina, "among the disqualifying crimes were those to which [the Negro] was especially prone: thievery, adultery, arson, wife-beating, housebreaking, and attempted rape. Such crimes as murder and fighting, to which the white man was as disposed as the Negro, were significantly omitted from the list."6 In 1901 Alabama lawmakers - who openly stated that their goal was to establish white supremacy - included a provision in the state constitution that made conviction of crimes of "moral turpitude" the basis for disenfranchisement.7