Republican Senate candidate Roy Moore's remark that the last time America was great was during slavery is another example that the former Alabama Supreme Court Chief Justice is unfit for office, his Democratic opponent said Friday.

Moore made the comment during a September rally in Florence and gained national attention on Thursday. At the rally, a black member of the audience asked Moore when was the last time America was great and he responded, "I think it was great at the time when families were united--even though we had slavery--they cared for one another...Our families were strong, our country had a direction."

Sebastian Kitchen, spokesman for the Doug Jones campaign, said the comment was "disturbing" and part of a pattern of behavior on Moore's part.

"This disturbing comment is part of Roy Moore's terrible history on civil rights including fighting the removal of segregationist language from the state Constitution, allowing secessionists to meet at his foundation, accepting more than $600,000 from a white nationalist, and referring to Native Americans and Asians as reds and yellows," Kitchen said. "With his extreme views and divisive rhetoric, Roy Moore would be incapable of representing all of the people of Alabama."

Moore denied that the comment about "reds and yellows fighting" was a reference to race, saying instead that he was invoking the religious song "Jesus Loves the Little Children," which includes the lyrics, "red, yellow, black and white, they are all precious in [Jesus's] sight."

The Los Angeles Times originally reported on Moore's slavery remark in September and released audio of the exchange with the black supporter on Friday. Listen to it below: