How can one believe that on the one hand God should have...

How can one believe that on the one hand God should have mobilized His prophets to implement divine law establish justice and propagate the essence of religion even at the cost of their lives and that on the other hand He should impose upon people the duty of obeying the wishes of rulers who not only do nothing to protect the ummali and advance its religious awareness but even wish to nullify all the strivings of the prophets trample God's law under foot and enthrone tyranny and oppression in society?

Can the happiness and salvation of society be attained by following such rulers? Can such a government enable the Muslims to attain power and dignity? Can one ascribe to God the illegitimate and foolish view that such rulers deserve obedience? Of course it might be possible to restrict obedience to the Holder of Authority to those cases where his edicts conform to the criteria of divine law making it obligatory for Muslims to oppose him whenever he acts in a sense contrary to it.