This is the 12617th most frequent Spanish word.
mueran
"Mueren" is the third person plural subjunctive of "morir in Spanish language translated to "They die."
The word 'mueran' is used in the subjunctive mood to express a desire or wish for injustices to cease.
¡Que mueran las injusticias en el mundo!
Let the injustices in the world die!
Here, 'mueran' is used in a hypothetical situation referring to the potential demise of the heroes as desired by the villains, thus subjunctive with influence.
Los villanos en la historia intentan que los héroes mueran.
The villains in the story try to make the heroes die.
In this sentence, 'mueran' is conditional, used to describe a possible situation depending on the occurrence of pollution conditions causing tree deaths.