There's one thing in common with all of these white mass shooters. They didn't use Facebook much. Most of them only have a few friends and 0 posts. So, I'm going to say it. I'm sorry. It's concerning if you don't use facebook every day. It's especially bad if you have a Facebook and don't post at all. It's as if you know how to use the internet but you're probably posting on a radicalized anonymous message board like i've heard on the news. You should post often.
Just a heads up, I'm reporting any inactive profiles on mastodon as well.