The same way it works here in the US. Keep telling the same lie over and over and over till everyone believes it even if it hurts them.. Religion is a good example. It's nothing but propaganda and followers of religion believe the magic sky daddy will save them from all the "bad people" and they keep selling that story over and over and over even though nobody has EVER, EVER seen, heard, smelled, touched or felt anything even close to a god.
Another example is how the republicans wrecked our economy with complete deregulation of our economy to the point where they refused to even regulate blatant fraud. They allow these bankers and Wall St assholes to sell derivatives completely deregulated even though it totally wrecked us, BUT tell the public the big lies of how it was caused by poor people buying houses they couldn't afford. (AS IF that could wreck not only OUR economy, but the global economy) That's propaganda for you and sadly it works here as well as the developing world. KILL those damned poor people!