This is the 12772nd most frequent Polish word.
niewinni
"Innocent" (plural).
Here, 'niewinni' is used as an adjective describing the children, highlighting their purity or naivety.
Dzieci są niewinni w swoich działaniach.
Children are innocent in their actions.
In this sentence, 'niewinni' acts as an adjective referring to the status of the individuals in a legal sense.
Oni zostali uznani za niewinni przez sąd.
They were found to be innocent by the court.
This usage questions the innocence of the people, particularly in the context of involvement or responsibility.