A person who promotes hatred or prejudice, especially against a particular group.

घृणाप्रवर्तक

English Usage: The politician was labeled as a hatemonger after his inflammatory speech.

Hindi Usage: उस राजनेता को उसकी उत्तेजक स्पीच के बाद घृणाप्रवर्तक के रूप में टैग किया गया।