Ghaddifi was a dictator there is no justifying that we get it. But he was no longer America's enemy. He gave up his WMD's and was trying to mainline into the international community. But he also used a lot of the wealth of Libya to invest in the rest of Africa building infrastructure. Ghaddafi was pushing for the adoption of a gold backed African currency across the continent. He wanted a self determined Africa. This would have really upset the world financial order of things and so he was taken out by the US, Nato and the Saudi's.ISIS is a proxy army of the Saudi's created with the help of America remember that. Hillary Clinton mainlined the operation and famously boasted about how she killed him. And now look at what Libya has become.
http://www.ibtimes.co.uk/african-slaves-mutilated-cooked-like-kebabs-by-libya-gangs-1649495