Decades ago, nearly every m&d i interacted with personally disagreed with the Americans waging war with Saddam. They all sided with Saddam because he was a fellow sunni. When Saddam fell, every sunni m&d I met was concerned about the Iraqi lives that were lost, even though in likelihood, most of those lives were shia moslem.
When saddam was in power, none of these m&ds ever once expressed concern that Saddam was slaughtering the shia moslem or the kurds by the tens of thousands. I never once met a m&d who was visibly outraged by it. Even if they were, they all kept quiet.
It's really their religious outlook. They hurt you and persecute you, they all turn a blind eye if you are not a sunni. You hurt a sunni, suddenly every sunni is concerned about racism, persecution, death toll and humanitarism.