"Son Decapitates Father and Posts Video: Gruesome Case Unfolds"

TL;DR
Justin Mohn, a disturbed conspiracy theorist, bought a 9mm handgun legally and used it to shoot his father before decapitating him with a knife and machete. He then posted a video online holding up the head. Mohn was arrested after breaking into a National Guard facility, and the video remained online for hours before being taken down. He expressed various conspiracy theories and threats in the video, and has been charged with murder.
- Justin Mohn decapitated his dad after first shooting him in head with 9mm he bought the day before: DA New York Post
- Justin Mohn, who killed father and posted video, had 'clear mind' USA TODAY
- Pennsylvania man arrested after posting YouTube video of father's decapitated head NBC News
- Man charged with shooting and beheading father bought the gun he used one day earlier, police say. Here's everything to know about the gruesome case. Yahoo News
- Man accused of decapitating father allegedly wanted to mobilize National Guard against federal government ABC News
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