Do Americans understand that if Afghans and Iraqis have the chance they would massacre all of them?

Invasions creates misery and today Americans are hated in Iraq and Afghanistan more then any other country. If Iraqis and Afghans have the capability they would go to the U,S and massacre American children for fun. They do not feel liberated in Iraq or Afghanistan they feel they want revenge from the Americans, for how long will this hate be part of their life I have no clue? do Americans understand the truth or Fox News is still convincing them with other wars Ie; Iran?