不正
Common
Noun
I-adj
Noun
1
noun (common) (futsuumeishi)adjectival nouns or quasi-adjectives (keiyodoshi)nouns which may take the genitive case particle 'no'
injustice;unfairness;wrongdoing;iniquity;impropriety;irregularity;dishonesty;illegality;fraud
不正には抗議せざるをえない。
You must speak out against injustice.