Why is "Flag of Corrientes" trending?

Wikipedia Overview

The flag of Corrientes has been the official symbol of the city since 2014. The flag is divided into three equal vertical fields, the two outermost ones are light blue with a red vertical stripe, the middle field is white. In the middle of the flag are two symbols taken from the city's coat of arms. Seven spears represent the seven peninsulas that the coast forms in the Paraná River at the site of the foundation of the city of Corrientes and which gave rise to the name. Above the spears there is a yellow circle, reminiscent of the Sun of May on the national flag. In the middle of the circle there is a cross with two beams. The cross represents the Miraculous Cross, a relic currently kept in the Iglesia de la Santísima Cruz de los Milagros. Shortly after the founding of the Corrientes, the Spanish erected a wooden cross, which the indigenous inhabitants tried to burn, but it survived. The red stripes in the middle of the blue ones refer to the old flag used in Corrientes by José de Silva and to the flag of League of the Free Peoples.