If your language has a way of showing that this is the way one person would speak strongly to another, different from a general rule that people are supposed to obey, you should use it here.
grind into powder. This is a metaphor for "treat unjustly." (See: [[rc://en/ta/man/translate/figs-metaphor]])
# the needy
This nominal adjective can be translated as a noun phrase. AT: "any needy person" or "any person who does not have what he needs to live" (See: [[rc://en/ta/man/translate/figs-nominaladj]])
# at the gate
The place where people bought and sold items and settled legal arguments is used as a metonym for business and legal activity. AT: "in court" (See: [[rc://en/ta/man/translate/figs-metonymy]])