Murder versus War

In discussion about ISIS, the media is using a wrong terminology. The problem with using a wrong terminology is that it confuses the issue.
The media claims that ISIS is murdering Americans. Not true. ISIS is killing Americans.
The term "murder" is usually reserved for situations where an individual or a small number of people in a disorganized manner kill one or more other people. For example, the Manson killings were acts of murder.
However, if a large number of people are either involved directly or indirectly in the killing of unknown other people, this is an act of war, in which an "enemy" is killing another "enemy". In no way, is this action a matter of murder.
In the case of ISIS, the killers are killing Americans, because they are at war with America. Any killing that ISIS members do are a result of enemy action. There is no murder involved.
Calling the deaths of Americans at the hands of ISIS acts of murder, accidentally or intentionally hides the fact that ISIS is at war with America. America can then not respond equally in defending itself as a war enemy.
For example, the Japanese bombed Pearl Harbor on December 6, 1941. That action by Japanese aircraft killed many Americans and destroyed many American ships. America recognized the Japanese action as an act of war and immediately responded with similar acts of war. The the complete war was then on and America was successful in winning it. If the Americans had regarded the Japanese attack as acts of murder, there would have been no basis for organized retaliation; no war; and you can guess the outcome.
ISIS by its actions has demonstrated that it is at war with America. America needs to recognize this activation of war by I SIS and respond equivocally, with the intention of defeating the enemy and thereby winning the war. Anything less, reduces all future action to skirmishes, such as US border control agents periodically have with drug dealers.