No, I'm using the word correctly. You sound like a 20 year old journalism major who needs a remedial course in vocabulary. Did you attend public school?
heretic (hèr´î-tîk) noun
A person who holds controversial opinions, especially one who publicly dissents from the officially accepted dogma of the Roman Catholic Church.
Excerpted from The American Heritage® Dictionary of the English Language, Third Edition © 1996 by Houghton Mifflin Company. Electronic version licensed from INSO Corporation; further reproduction and distribution in accordance with the Copyright Law of the United States. All rights reserved.