“no justice, no peace.” means nothing. They say it as a lazy chant. They don’t know the true definition of either word applying to a civil society.
Violent death of innocent bystanders is not something to celebrate.
The government would destroy beyond repair, the life of any civilian who killed a non-participant in such a fashion.
But they made up out of whole cloth the fiction of “qualified immunity” so that they would never have to answer for the death of innocents.
Why does the death of civilians fill you with such manifest joy?