"I cried as I prayed for enough strength to go over there and break both their necks," he said.
He held back — but instead devised an even more evil plan: He would create his own homemade bomb, and set it off directly outside Muncie's Islamic Centre.
He would sit a safe distance away and watch the horror unfold.
"200+ killed or injured, that was the plan. My hatred of Islam was the only thing keeping me alive," he recalled.
But McKinney decided to give the community he so loathed "one more chance".
He visited the local Islamic Centre with an open mind, and was given a Koran to take home and read.
Just eight weeks later, he converted to the religion, and some years later, is now president at the very Islamic Centre he had planned to blow up.
It's a turn of events that McKinney tried to shed some light on during a satellite interview with the Sunday Project panel.
"As I was ranting one day at home, my daughter looked at me in total disgust, because of the things coming out of my mouth about other groups, other people's beliefs or races," he told them of his sudden change of heart.
"A light bulb came on: I saw what I was doing to my daughter; I was passing on prejudice."
A powerful message from a man who once planned to blow-up his local Mosque. He reveals what changed his mind and heart, and lead him instead down the path of peace and acceptance. More: https://t.co/6yEsHO0JMrpic.twitter.com/Wfq13zf6ZA
McKinney said he could see his old self in the Australian accused of killing 50 people in the Christchurch terror attacks this month.
"The person who committed the crime, who murdered innocent people — that was me. We were the same people. When he was greeted at the door, he didn't stop and think. When I walked into my Islamic Centre and I was greeted with a smile, it automatically warmed me up a little bit. It made me open, and I started listening," he said.