Just as you cannot capture light by putting it in a box, you cannot define Charlie Kirk without the word Christian. 

Release bitterness and resentment to allow God's Spirit to flow through you to others. “And when you stand praying, if you hold anything against anyone, forgive him, so that your Father in heaven may forgive you your sins.” Mark 11:25

“And God said, Let the earth bring forth grass, the herb yielding seed, and the fruit tree yielding fruit after his kind, whose seed is in itself, upon the earth: and it was so.” Genesis 1:11