Why is "Arbuthnot and Ambrister incident" trending?

Wikipedia Overview

The Arbuthnot and Ambrister incident occurred in April 1818 during the First Seminole War when American general Andrew Jackson invaded Spanish Florida and his troops detained two British subjects, Alexander Arbuthnot and Robert Ambrister. They were charged with aiding the Seminole, Red Sticks, and maroons against the United States. Jackson "lacked clear authority or jurisdiction under the law or in his position as a field commander" but had them "tried by court-martial, essentially as stateless persons and presumably unlawful combatants or spies, and they were executed at St. Marks without any reference to higher authority in Washington. Eighteen days passes between the initial capture and the court-martial; Jackson advised the War Department of the prisoners but conveniently neglected to explain what he intended to do with them...he reported the executions after the fact, on May 5, in the same report that announced his intention to occupy Pensacola".