The victims of a monster like Saddam are often complicit in their own destruction. He didn't himself pull many triggers (although he did pull a few). His orders were carried out by other people, who were recruited from among the populace at large.
Soldiers obey because they are afraid not to. Low level policemen, the same. Doctors cutting off ears, the same. A few doctors refused to obey and died. The rest obeyed and became Saddam's accomplices.
Everyone joined the Baath party; those few hardy souls who refused went into exile or died; the rest are complicit. A monster such as Saddam must overcome the morality that is built into the culture; if the level of morality is sufficiently well developed, guys like Saddam (and Hitler, and Stalin, and Mao) get smothered in their cribs, or wind up as inmates at a mental hospital, or victims of a coup d'etat at the hands of some general with a slightly better developed sense of good and evil.
OK. Fair enough.
They can keep all Christian missionaries out of Iraq if we can keep all Muslims out of the USA, including the hundreds of Wahabbi mosques Saudi Arabia has built here!