This isn't one of your Southern myths again is it?
Gee, if I remember correctly, it was the South that fired on the U.S. flag.
I think that would be considered an act of treason in any nation of the world.
Only a Southerner would claim to be the victim after enslaving 3million people and then firing the first shots of the war.
Read the Constitution. It defines treason. The South Carolinians were no longer U.S. citizens and said so, having voluntarily abrogated their U.S. citizenship en masse and taken their State out of the Union.
Therefore, no treason was possible. But we were going over all this while you were off doing something else.
And it did so without consequence and with good reason. The first shot on a flag was on the Star of the West, which had troops for Fort Sumter hidden below its decks on a false resupply mission.
The second shot was a warning shot on the merchantman Rhoda Shannon a few weeks later in a case of mistaken identity for a federal warship.
The third shot was fired by the federal warship USS Harriet Lane on a southern civilian passenger ship entering Charleston harbor the night before the battle of Fort Sumter.
The fourth shot was fired on Fort Sumter itself - a preemptive strike to induce the fort's surrender before the arrival and assault of a northern fleet of warships that was amassing outside of the harbor.
Needless to say, to pretend that the said fourth shot, aimed at a fort in a battle that produced no casualties, justified the full scale invasion of 14 states, three of which were not even secessionist at the time of invasion, is akin to employing an atomic warhead to silence the neighbor's barking dog.