Why is the media using this Pentagon shooting to paint the entire 9/11 truth movement?

So? Not everyone who questions the facts of the 9/11 attacks are mentally ill, paranoid delusionals who join hate groups and want to overthrow the government. Some of the people are pretty far out there, but the people who do not believe the official story are a diverse group with many different backgrounds, and many different explanations. Some are just skeptical of the official story, but do not make any claims as to what else happened.