polemic
[ puh-lem-ik, poh- ]
a controversial argument, as one against some opinion, doctrine, etc.
USE 1
The professor’s lecture quickly turned into a polemic against the current education system, sparking heated debates among the students.
USE 2
The columnist’s polemic on climate change drew both praise and criticism, illustrating the divisive nature of the topic.
USE 3
Her latest book is a compelling polemic that challenges the traditional views on economic policy and advocates for radical change.