The Founders never intended for Americans to trust their government. Our entire Constitution was predicated on the notion that government was a necessary evil, to be restrained and minimized as much as possible.
I think we can all agree [Bashar] Assad is a bad and evil actor, but I'm not so sure that we want the Islamic rebels to be in charge of Syria either.
There is often variations of evil on both sides of the war. What we have to decide is whether or not regime change is a good idea. It's what the neoconservatives have wanted. It's what the vast majority of those on the stage want.