US Stamp for Muslim holiday.

The United States Post Office (USPS) has had many commemorative stamps over years and I have enjoyed seeing and using them until now.
A new stamp that has been issued supports the very essence of what our soldiers are fighting against.
Now ask yourself, would you purchase or support such a stamp? OK, you want more information on what I am talking about, so
follow along with me.

Wasn’t the following true?
A Muslim bombed Pam Am flight 103, World Trade Center in 1993, the USS Cole, Marine barracks in Lebanon,
and, the American Embassy in Africa. What about 9/11/2001?

OK, so why is the USPS issuing a stamp commemorating a Muslim holiday?
http://www.usps.com/communications/newsroom/2009/pr09_105.htm