"I refused at first but when they threatened me that I could not fly, I agreed, provided they gave me a mirror to retie my turban," Pannu said.
"Before I removed my turban, Agent Hernandez asked the dreaded asinine question, 'Is there anything we need to be aware of before you remove your turban?' I politely answered that there is a lot of long hair and something called the brain underneath," he added.
Security personnel in the US adhere to strict regulations that compel them to violate religious persons beliefs if they feel the person is a possible terrorist threat.
The irony of the situation is that Pannu had gone to talk about his book "Bullying of Sikh American Children: Through the Eyes of a Sikh American High School Student" for children participating in the annual Sikh Youth Symposium in Bakersfield, California.
Pannu said he felt "utterly humiliated, shaken, distraught" by the experience.
