opposed to or directed against the beliefs and activities of the Roman Catholic Church

Anti-Catholic sentiment during this period was very strong. 这一时期的反天主教情绪非常强烈。

anti-Catholic bigotry/bias/discrimination 反天主教的偏执/偏见/歧视

There was a desire to fight the antiCatholic element. 人们渴望与反天主教势力作斗争。