An American christian Joseph Stack crashed his single engine small plane into US tax authority(IRS) building in Austin, Texas. White house promptly issued a statement that as there were no muslims involved in this incident so it can't be classified as terrorist act..
http://www.google.com/hostednews/ap/article/ALeqM5hNnzykLdHPZRF_lFGCLwPL2jhJ5QD9DUORTG2