Even the irreligious, secularist rulers bless this form of religion, show respect and support to its advocates in order to enable them to lull the masses and induce them to the status quo, and engage the youth in a web of illusions, symbols, terms and trivialities. While Islamic faith is relatively firmly established in certain areas of the world, in others there is a total ignorance of the religion of Islam. A good example of priorities changing according to place is that certain sects that appear only in certain places do not have to be refuted elsewhere. So while there is need to warn people against the deviations of the Nation of Islam in North America, that is really of little importance in Bosnia or Pakistan. Similarly, there are different shirk practices in different places that need to be corrected, but concentration of efforts and priorities will depend on the relevant deviation in a particular place.
Priorities also differ with time.
Nowadays, the situation differs in many areas of the world. Atheism and agnosticism are not uncommon, so therefore there is need to invite people to the belief in Allah's existence. At times there are certain pressing issues that need to be addressed. During Ahmad ibn Hanbal's time, the issue of non-creation of the Qur'an was very important, while today calling people to even more basic issues such as recognizing Allah's existence and worshipping Him is more important. Various books of creed written since the time of the Prophet Muhammad sallallahu alayhe wassalam emphasized those issues that were most controversial at the time of writing.