Kenn, I understand you want to stay off line for a while, but you were making an impact online. You can tell because those suckers went after you. They were afraid of you, because you told the truth. Putting your life back together after identity theft is a heartache, but don't give up. It'll take time, but you can pull through it.
As for your Social Security card, you need to go the nearest SSA office and tell them someone stole it. Contact each of the credit reporting agencies, even fucking Equifax, and tell them to freeze all your credit reports, so no one can use your info to borrow money or apply for credit cards. Read this post about the Equifax hack for advice https://medium.com/@message2america/the-equifax-security-breach-5aa1e3505e13
You're gonna need a lawyer, too. You don't need to hire one right away, but do the research and find someone near you who has dealt with identity theft. You live in Jersey. Shouldn't be hard to find one, with NYC and Philly being nearby.
They're trying to scare you, with those threats. You need to tell the police and the FBI if anyone threatens you or anyone around you with bodily harm. But my guess is, they're chickenshit armchair warriors, who can only attack you with their computers. They're not Jason Bourne.
You got more friends all around the world than enemies. Reach out to us when you need help. And for God's sake, don't off yourself.
Peace.