The framers of the Constitution took deliberate steps to ensure that treason trials would not be used as political weapons against opponents. Article 3, Section 3 defines the crime very narrowly: “Treason against the United States shall consist only in levying war against them, or in adhering to their enemies, giving them aid and comfort.” This language is drawn from an English statute from 1351 that was also intended to limit the scope of treason. Speaking against the government, undermining political opponents, supporting harmful policies or even placing the interests of another nation ahead of those of the United States are not acts of treason under the Constitution.
During the American Revolution, the rebelling Americans were all committing treason against Britain. Similarly, the thousands of Americans who actively aided the British committed treason against the United States. In the Civil War, the hundreds of thousands of men who fought for the Confederacy all levied war against the United States, as did the people who aided and abetted the rebellion.
Neither the American Revolution nor the Civil War led to mass executions. At the end of the day, the spirit of reconciliation prevailed, and the victors allowed the vanquished to return home peacefully. But it remains the case that many Americans have a traitor lurking somewhere in their family tree.Washington Post
So every time you hear someone say “it’s my heritage,” that heritage referred to is a heritage of TREASON and the symbol of the TREASON is the confederate flag.