Separating church and state is one thing, but we now need a societal disapproval of religious reasoning employed in the political environment. The sphere of politics should be based upon logic, science, statistics and progression, not on age old rules that are just 'right', regardless of any justification. If we are going to develop our society's we need to decide what is good or bad for society based on logic and reason. Religion cheapens that debate and throws things off course, usually in favour or conservative traditional beliefs that may be out of date, wrong, or more likely, right, but not applicable in all circumstances.
This is especially true for countries which have a distinctly secular constitution but secularism is being attacked through the actions of those in power, Turkey is a good example of this. Since 2003, Turkish Prime Minister (now President) Recep Tayyip Erdoğan ushered in a new period of Islamist populism in Turkish politics, eroding the separation of religious rhetoric from the political sphere in Turkey. The situation has become so pronounced that the 2016 coup d'état attempt by a faction of the Turkish military called the Peace at Home Council, named the erosion of secularism, elimination of democratic rule, and a disregard for human rights as their reasons for trying to overthrow Erdoğan's government.
Religion is an often used tool of those in power to demonstrate their moral superiority; however when taken to the extreme this has led to genocidal campaigns so many times in history, the Crusades, the Spanish Inquisition, the partition of India and even modern ongoing conflicts such as Israel-Palestine and Persecution of Muslims in Myanmar. Not to mention the hundreds of suicide bombings that are carried out around the world on a yearly basis now, something that stems from an overtly political struggle, but has become so toxically intertwined with religion that it is actively disrupting civil behaviour and cultural understanding around the world. Religion should be a deeply personal thing that cheapens any political debate if someone tries to signal their own level virtue as a means of influencing a debate or public opinion.