@izzythepush,
If I do, than George Bush was right.
Not to perpetuate the Bush as Cowboy metaphor, but it's kind of like when the Marshall finds himself in a tight spot in a saloon and tells the patrons "get ready to fight or get the hell out of here."
In war you choose sides or you flee the area. Sunni civilians who support ISIS and are aiding (regardless of their motivation) have chosen a side, and if they hope to benefit from an ISIS victory than they should be prepared to suffer from an ISIS defeat.
As previously noted the very sad fact is that there are probably Sunni civilians who want no part of what is coming, but ISIS won't let them flee. They're going to be caught in the meat grinder.
Who is talking about targeting civilians anyway?
ISIS will be targeted and the extent to which they keep civilians around them to serve as shields, civilians will suffer casualties. Whose fault will that be? I doubt the Iranians will care one bit.
If, as it appears, the Saudis are helping to bankroll ISIS, the US should respond appropriately. "Targeting" them militarily is, obviously, not an appropriate response. Iran bankrolls Hamas, Hezbollah and Palestinian Islamic Jihad, not to mention sending members of the Quods force to engage in terrorism in places like India and Kenya. The US hasn't "targeted" Iran for this, why would it target Saudi Arabia? When we do, maybe I'll buy your line of argument.