From Salon.com--This is the best article I've read in a long time:
Mustache elicits Taliban death threats 

According to Al Jazeera, militia group and Taliban ally Lashkar-e-Islam deemed Afridi’s whiskers to be “un-Islamic” ...The group then kidnapped the 48-year-old businessman and held him hostage in a cave for a month until he finally shaved....
Last year, Afridi, unafraid, grew it back...
“I don’t like smoking. I’m not fond of snuff, or drinking. This is the only choice in my life,” he said. “I’d even sacrifice food, but not the mustache. It’s my life. It’s not part of my life. It is my life.”