Fundamental Islamic groups viewed Islam as a State religion which had a huge influence over both politics and society.
Ataturk viewed a more western and secular outlook and did not want religion to play any role in both the politics of a Turkish republic nor in the society in general.
He believed that the Turkish people had a lot to learn from the Western European countries and should abandon old customs and traditions.
The fundamentalist, however wanted to ensure a Caliphate and a strong system of Royalty and aristocracy.