So contact NBC with your concerns. Arguing with people who can’t change it just makes people who might otherwise agree with you frustrated with your point of view.

You’re angry about a headline that abbreviates the actual story.

The very first paragraph of the article:

Mass graves uncovered in Syria in the days since President Bashar al-Assad wasoverthrown are exposing evidence of some of the worst abuses since the Nazis, a top international war crimes prosecutor said. [emphasis mine]

The article agrees with you. It’s only the headline that doesn’t.

This kind of anger and engagement at headlines is exactly what the media thrives off of. Don’t let them win by doing just that.