Flag Desecration Amendment

The Flag Desecration Amendment (often referred to as the Flag-Burning Amendment) is a proposed addition to the Constitution of the United States that would allow the U.S. Congress to prohibit by statute and provide punishment for the physical "desecration" of the flag of the United States. The concept of flag desecration continues to provoke a heated debate over protecting a national symbol, preserving free speech, and upholding the liberty said to be represented by that national symbol.

Source: Wikipedia — Flag Desecration Amendment (CC BY-SA 4.0)