What is the "leftist lens" here? Salvadorans [0] and Guatemalans [1] want to kno...

What is the "leftist lens" here? Salvadorans [0] and Guatemalans [1] want to know why their citizen has died while in USA custody under curious conditions. When USA citizens die under custody of North Korea [2], or when USA citizens die under state actions orchestrated by the USA [3], we are upset and wonder what has happened; is that an inappropriate response here? It is confusing and dismaying that we are not getting a clear insight and understanding into how the USA government is managing its camps on the southern border [4].