Polemic

A polemic is a forceful argument or controversy made against one opinion, doctrine, or person.

It is one-sided and extreme, not a debate or discussion. It often occurs in disputes.

The word is derived from the Greek polemikos (πολεμικός), meaning "warlike, hostile".^[1][2]

1. ↑ Merriam-Webster Online Dictionary (Merriam-Webster, Springfield, MA, 2005), s.v. "polemic"
2. ↑ American College Dictionary (Random House, New York)