Hey TrickorTreat,
I think there are probably very few who would argue with you on the need to stop ISIS. I also think that the criticism that is levelled at the US has more to do with the attitude of imperialism that is practised by that administration over many, many decades. No other country in the world has military situated in over 100 countries in the world. No other country is spending taxpayer dollars arming terrorists, all the while proclaiming the need for a war on terror, except the USA, even while they change and eliminate the civil rights of their own citizens.
They trained and armed Osama Bin Laden, they armed Saddam Hussein, they armed the rebels in Syria, many of which are Al Qaeda sympathizers some of whom have apparently returned to Iraq to fight alongside ISIS. They armed and financed neo-Nazi thugs in the take-down of an elected government in Ukraine, and they continue to support that government with lies that have been exposed at least a couple of times.
They also have a history of putting in place governments to support their own ends despite the subsequent revelations that these governments were vile and corrupt. Hosni Mobaruk of Egypt springs to mind. He was theirs for years. Just like Saddam Hussein was their guy for years. And for decades, they've supported Israel with funds and silence in Israel's oppression of the Palestinian people.
Here's a link to a website of a man with world class credentials in the fields of government and journalism(check out his About page).
http://www.paulcraigroberts.org/category/articles/ Dr. Paul Craig Roberts has numerous articles on his site that pinpoint the numerous bad acts of the American administration. And from his very worthy credentialed perspective, Dr. Roberts fears the American push towards some form of Third World War. And you should know that if that war comes in whatever form, Europe and Britain will feel the pain more (at least in the beginning) than America will.
Watching the news and reading your newspaper accomplishes little save you the public, hearing only what the government wants you to hear. If you actually are interested in what is happening in the world, that will seriously impact us all, it's necessary to go instead to alternate news sources. Global Research is one good site as is another called Zero Hedge. Links to these two sites are:
http://www.zerohedge.com and
http://www.globalresearch.ca
I think with so much 'news' from around the globe available these days and the 24 hour news cycle, it's extremely easy to lose track of who's doing what and why and who got caught doing what and why and particularly when it comes to governmental shenanigans. What we get from mainstream media these days is actually more accurately 'marketing'. And while we've learned to be suspicious of corporate marketing (is there really that much chicken in the chicken noodle soup?), I think we need to begin applying that same suspicion to our governments wherever they are and no matter what they say.
It should also be noted that as early as 1991, the US intended to disrupt the Middle East. Syria, Iraq, Iran, Libya and a fifth (can't remember the name) were in their crosshairs. So says General Wesley Clark in this talk he gave:
https://www.youtube.com/watch?v=O5q9PYy1NoA
Perhaps now it's a little clearer on where the criticism stems.