estaban justificando
-they/you were justifying
Imperfecto progresivo para el sujeto ellos/ellas/ustedes del verbo justificar.

justificar

Creo que básicamente estaban justificando el seguimiento y el acecho. JS: ¿Qué -?
Well, I think they basically felt that he was justified to follow and stalk—JS: What the—?
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