They are the primary marketing arm for all gun manufacturers.
They stoke fear and panic in the fearful hordes like you to drive sales.
(Yes, fearful. If you weren't fearful why would you need a gun for self-defense?)
Even the Russians are helping now.
Did you see Russia's Facebook ad featuring the African-American woman dry firing a rifle?
"Russian Facebook ads showed a black woman firing a rifle, amid efforts to stoke racial strife"
and sell guns
https://www.washingtonpost.com/business/technology/russian-facebook-ads-showed-a-black-woman-firing-a-rifle-amid-efforts-to-stoke-racial-strife/2017/10/02/e4e78312-a785-11e7-b3aa-c0e2e1d41e38_story.html