Hatemonger
ahd-5
noun.
One who incites others to hatred or prejudice.
the GNU version of the Collaborative International Dictionary of English
noun.
one who arouses hatred for others by speech or writing.
Wiktionary, Creative Commons Attribution/Share-Alike License
noun.
A person who encourages
hatred
towards a person or group of people.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
noun.
one who arouses hatred for others
Word Usage
"If things continue along the present path, the not so distant future will have me labelled a hatemonger and facing prison time at the very least."
Hypernym
Words that are more generic or abstract
depreciator
detractor
disparager
knocker