The Saints can testify whether I am willing to lay down my life for my brethren. If it has been demonstrated that I have been willing to die for a ‘Mormon,’ I am bold to declare before Heaven that I am just as ready to die in defending the rights of a Presbyterian, a Baptist, or a good man of any other denomination; for the same principle which would trample upon the rights of the Latter-day Saints would trample upon the rights of the Roman Catholics, or of any other denomination who may be unpopular and too weak to defend themselves.

Joseph Smith
http://www.lds.org/ldsorg/v/index.jsp?hideNav=1&locale=0&sourceId=1b28b00367c45110VgnVCM100000176f620a____&vgnextoid=da135f74db46c010VgnVCM1000004d82620aRCRD