I agree with you 100%. Why should we pray for someone who advocates killing the most helpless among us? That certainly is not Christian. My question is, "As a Christian, how could I pray for an agent of the devil?". Even if you have the best of intentions in praying for him, you become an enabler for him and his policies. A lack of protest is seen as agreement by his followers.
I think many of the clergy have long ago lost sight of the true teachings and have succumbed to the liberal "Church of What's Happening Now".
Paul wrote that Christians should pray for the King and all those in authority. He wasn’t saying we were to agree with their evil choices, but to pray that they might make good decisions. The Ceasers were in power at the time...not exactly considered to be pillars of morality and goodness. Paul and Peter died at the hands of Nero who was responsible for the torture and death of many Christians. They apparently felt the need to pray for that type of leader.
Nobody said this would be an easy thing. I struggle with it myself. Then again, Jesus never promised that everything He asked us to do would be easy.