I have never heard of that. It is just the proper thing to do.
According to wikipedia:
The flag of the United States is sometimes burned as cultural or political statements, in protest of the policies of the U.S. government, or for other reasons, both within the U.S. and abroad. The United States Supreme Court in Texas v. Johnson, 491 U.S. 397 (1989), and reaffirmed in U.S. v. Eichman, 496 U.S. 310 (1990), has ruled that due to the First Amendment to the United States Constitution, it is unconstitutional for a government (whether federal, state, or municipal) to prohibit the desecration of a flag, due to its status as "symbolic speech." However, content-neutral restrictions may still be imposed to regulate the time, place, and manner of such expression. If the flag that was burned was someone else's property (as it was in the Johnson case, since Johnson had stolen the flag from a Texas bank's flagpole), the offender could be charged with petty larceny (a flag usually sells at retail for less than USD 20), or with destruction of private property, or possibly both.
There have been several proposed Flag Desecration Amendments to the Constitution of the United States that would allow Congress to enact laws to prohibit flag desecration:[121]
Douglas Applegate (Ohio) in 1991
Robert Dornan (California) in 1991
Bill Emerson (Missouri) in 1991, 1993, 1995
Randy Cunningham (California) in 1999, 2001, 2003,
Jo Ann Emerson (Missouri) in 1997, 1999, 2001, 2003, 2005, 2007, 2009, 2011, 2013
John P. Hammerschmidt (Arkansas), 1991
Orrin Hatch (Utah) in 1995, 1998, 1999, 2001, 2003, 2005, 2011, 2013
Joseph M. McDade (Pennsylvania) in 1989, 1995, 1996
Clarence E. Miller (Ohio) in 1991
John Murtha (Pennsylvania) in 2007
Ron Paul (Texas) in 1997, but he opposed any federal prohibition of flag desecration, including his own Flag Desecration Amendment which he proposed only as a protest against his Congressional colleagues'[who?] attempts to ban flag desecration through ordinary legislation instead of by Constitutional Amendment.[122]
Gerald B. H. Solomon (New York) in 1991, 1993, 1995, 1997
Floyd Spence (South Carolina) in 1991
Andrew Jacobs Jr. (Indiana) in 1995
David Vitter (Louisiana) in 2009
Spencer Bachus (Alabama) in 2013
In 1862, during the Union army's occupation of New Orleans in the American Civil War, William B. Mumford was executed by hanging after the occupation of the city of New Orleans by the forces under the command of General Benjamin Franklin Butler for removing a United States flag.[123]
In 1864, John Greenleaf Whittier wrote the poem Barbara Frietchie, which told of a (probably fictional) incident in which Confederate soldiers were deterred from defacing an American flag. The poem contains the famous lines:
"Shoot, if you must, this old gray head,
But spare your country's flag," she said.
During the United States' involvement in the Vietnam War, American flags were sometimes burned during war protest demonstrations.[124]
After the Johnson decision, the Flag Protection Act was passed, protecting flags from anyone who "mutilates, defaces, physically defiles, burns, maintains on the floor or ground, or tramples upon any flag".[125] This decision was later struck down in the Eichman decision. After that case, several flag burning amendments to the Constitution were proposed. On 22 June 2005, a Flag Desecration Amendment was passed by the House with the needed two-thirds majority. On 27 June 2006, another attempt to pass a ban on flag burning was rejected by the Senate in a close vote of 66 in favor, 34 opposed, one vote short of the two-thirds majority needed to send the amendment to be voted on by the states.[126]
