A religion doesn't define it's followers by race. Any member of the human 'race' can follow any religion. A religion is a set of ideologies and beliefs that followers of that religion live their life according to. A 'white' Muslim or a 'black' Muslim is a misnomer. They are a Muslim.
race n. 1 each of the major divisions of humankind, each having distinct physical characteristics.
so disliking the religion of Islam is NOT racist.