Cross Burning is the act of setting a Christian cross on fire and destroying it. It is an act mainly done by the Ku Klux Klan after the founding of the second Klan by William Joseph Simmons. Many Christians believe it sacrilege to destroy a cross but Klan members see it as lighting the cross as a sign of the member's faith. It is also used by Scottish Clans in which a St Andrews cross is burnt as a declaration of war.
In the early 20th century, the Klan burned crosses on hillsides or as a means of intimidating people they saw as targets.