I shall write as a retired historian per "aberrations" in history. My inclination is to profess as a traditional monothetic-structure historian in the pluralistic interpretive school with contemporary emphasis.
It seems to me the first major aberration was the Benedict Arnold betrayal at West Point. Then secondly, anti-draft riots in New York City during mid-Civil War days. Indian warfares, the Spanish-American War and World War I were basically supported by patriotic Americans. Then aberration number three occurred near the termination of the Vietnam War with resulting disrespect for returning veterans through California.
Now aberration number four is an anti-patriotism event led by a person named Sheehan at the president's home in Texas.
Thus "four aberrations" in the pages of history whereby certain individuals who wanted the benefits and freedoms of our republic but did not have the respect or fortitude to defend our nation. "Duty" to some means not-a-thing and to patriots it is a commitment.