I don't think Jesus would admire a KKK member much either, but I am pretty sure that whatever few members the KKK has left mostly regard themselves as Christians.
Jesus had very little to say about racism. In his day, there were Jews, Samaritans, Romans and no doubt a number of others, but if skin color differed, there is no mention of it in the NT at all. Mostly, Jesus hung out with other Jews. There were no Roman or Samaritan apostles so far as we know.
I am happy to let Christians and everyone else decide who belongs and does not belong in whatever group.
Galatians 3:28
There is neither Jew nor Greek, slave nor free, male nor female, for you are all one in Christ Jesus.
Galatians 3:27-29
Colossians 3:11
Here there is no Greek or Jew, circumcised or uncircumcised, barbarian, Scythian, slave or free, but Christ is all, and is in all.
Colossians 3:10-12
Acts 8 (New International Version)
Philip and the Ethiopian
26Now an angel of the Lord said to Philip, "Go south to the road?the desert road?that goes down from Jerusalem to Gaza." 27So he started out, and on his way he met an Ethiopian[d]eunuch, an important official in charge of all the treasury of Candace, queen of the Ethiopians. This man had gone to Jerusalem to worship, 28and on his way home was sitting in his chariot reading the book of Isaiah the prophet. 29The Spirit told Philip, "Go to that chariot and stay near it."
30Then Philip ran up to the chariot and heard the man reading Isaiah the prophet. "Do you understand what you are reading?" Philip asked.
31"How can I," he said, "unless someone explains it to me?" So he invited Philip to come up and sit with him.
32The eunuch was reading this passage of Scripture:
"He was led like a sheep to the slaughter,
and as a lamb before the shearer is silent,
so he did not open his mouth.
33In his humiliation he was deprived of justice.
Who can speak of his descendants?
For his life was taken from the earth."[e]
34The eunuch asked Philip, "Tell me, please, who is the prophet talking about, himself or someone else?" 35Then Philip began with that very passage of Scripture and told him the good news about Jesus.
36As they traveled along the road, they came to some water and the eunuch said, "Look, here is water. Why shouldn't I be baptized?"[f] 38And he gave orders to stop the chariot. Then both Philip and the eunuch went down into the water and Philip baptized him. 39When they came up out of the water, the Spirit of the Lord suddenly took Philip away, and the eunuch did not see him again, but went on his way rejoicing. 40Philip, however, appeared at Azotus and traveled about, preaching the gospel in all the towns until he reached Caesarea.