The story
Possibly a blend of nigga + bigotry or nigga + faggotry. Alternatively, from nigga + -try, a pseudo-suffix resulting from rebracketing in words like bigotry, faggotry, idolatry, etc.
Etymology from Wiktionary, CC BY-SA 4.0.
niggatry
Today it means: The actions or behaviors stereotypically typifying African Americans. Full definition →