Asalam o Alaikum, Sir you mean to say that The institution of Zakaat, Baitul Maal, Ameer ul Momineen, Army of Mujahideen, Islamic rules of governance , all of this is not the part of Islam and Islam is concerned with personal life only. If your neighbour is being harrassed by the police, and as a result he is unable to perform salaat with Jamaat, do you think that Allah will spare you in the end for not doing anything to resist the oppression. Do you forget the hadith which says (explanation) that greatest Jihad is to stand against a tyrant ruler? Dawah is necessary but setting up a model of true Islamic society is also necessary.