Possible Reasons for Innocent Killings by USA

American drone strikes are killing a large number of innocent people in a lot of countries. The reason of the drone strikes is to apparently kill those who are a threat to USA and its citizens. What the Americans don't want to know or acknowledge is that each innocent person that dies in American drone strike has family and friends and acquaintances. They become very upset on the illegal death of their innocent loved-one. And in the process, they stop loving America if they ever were loving it in the first place. They start hating America and Americans. They start to see America and Americans as a gateway of deaths to innocent people all around the world. They start to see that Americans are killing innocent people freely all around the world, because they can, and no one in the world can do nothing about it.

Some of the possible reasons that the American politicians, generals, and policy makers are so indifferent to innocent human lives of non-Americans can be as follows:

• They need to keep the American nation in a perpetual state of war with enemies all over world, to make their media to generate glorious stories of American bravery and heroism.
• They need people all around the world to hate USA so that USA can keep its defense budget high and gives huge orders to its weapon manufacturers.
• American political system is so corrupt that the politicians policy makers do not realize the dreadful situation on the ground due to their actions and policies in other countries.
• American political system is in strong grip of religious and racial extremists who want to conquer the world and are very short sighted to see the longer term consequences of their actions and policies towards their own people, good well, and economy.
• American policy makers see the perpetual war as the only practical way to keep the whole world in a long war and keep them busy and dependent on USA for their defense. 
• Americans see all kinds of long wars as a method to improve their aggressive and offensive military capabilities to maintain its hegemony for as long as possible.

There can be several other reasons the current behavior of American politicians and policy makers when it comes to the world outside USA.