我真是倒霉透了，被职场Karen坑惨了，她竟然把我名字告诉了警察，现在我被公司停职了！

I'm sorry but the Karen in this situation is you. You are on a sub that has more people that will support you but stop and think for a minute. Think of the situation from an outsiders perspective one that doesn't know your true motives.

The coworker answered police questions...as they should. Everything they said was the truth....(from what your post says). They don't get to decide wether they believe you are the one or not....the cops decide what to do with the information given. They ask questions and it's the witnesses job to say the truth. That was done.

The cops have to take it seriously. You had exhibited signs that may be related to being a potential shooter. These signs are simmilar to ones of previous shooters. It's normal for them to take it seriously.

Finally it sounds like your company is doing the right thing for now. They are paying you on leave so you aren't losing anything. In the meantime, just work on yourself make sure everything is done correctly and protect yourself. A lawyer is always good to have if you are questioned by police. Sometimes interrogations can be pretty intense and can make innocent people feel pressured and saying the wrong things so it's a good idea to at least get a first consultation to get advice on that since no one here is a lawyer.

Goodluck hope everything goes smoothly for you

So you live in an area where the risk of an active shooter is seemingly high. In the midst of a threat of an active shooter not only being present, but most likely with rumours flying about it being either a current or former employee, Karen was interviewed by law enforcement, and she told the truth - she had heard you voice dissent about the company and heard you discussing buying an assault rifle. Her comment about her being scared of working with you was probably also true.

Your problem isn’t with Karen. It’s with law enforcement, and your company, who have taken an simple response and instead of investigating it and deciding that she was simply overreacting to what was clearly a highly stressful situation, they’ve dragged on the investigation.

Now, if she’s carried on with her stance, told coworkers that she’s too scared to work with you and is pushing for the company to act in order to provide a safe working environment for her, and isn’t willing to accept your explanations for her concerns then yeah, you’d have a legitimate gripe against her. But to hate on her for answering law enforcement honestly? That’s on you.

The fact that it’s 2 months down the track and you’re still being actively investigated does raise the question of is there a part of this story that you’re not saying? Perhaps other people voiced similar concerns?

You likely have zero case against the "Karen" and for good reason, coming from someone who owns several guns of my own. Don't talk about that shit at work. Don't talk about that shit unless you 100% know the people around you period. People are well within their rights to label you as someone to be conscious of the moment you do, because even if you work in a gun friendly area, talking about it outside of specifically gun oriented leisure places where you are not working and/or helping a customer is a red flag (not the gun control type) for non-owners. It makes it seem like it's a large part of your life, whether it is or not, because for a lot of people who talk about them in public, it is.

During a mass shooting scare, red flags mean a lot, no matter how innocent it was meant. You cannot control people's perceptions of you, nor are you likely to gauge how people perceive you accurately. Everything she stated was fact, as confirmed by you, derived opinion from her perspective, and that is why you very likely have no hope of suing her. Slander has to be intentional lies to ruin your reputation. Unless you have documentation about harassment from her in the past, don't expect anything to come from lawyering up against her, though you are likewise within your rights to try.

Now, different situation, your company. This is likely a case of them covering their asses and reputation, because whether you like it or not, how you have been perceived is something they very well might want to distance themselves from. Get a lawyer to protect yourself specifically to avoid misstepping into legal trouble, as while they have quite possibly overstepped by a large margin here, you are very much in potential legal trouble territory. Get a lawyer now, and regardless of how you felt before than, I would recommend being prepared to find a new job as you likely will not be perceived the same way after this long of an investigation, though again, do not do anything beyond this point without a lawyer's guidance.

On top of all this, remove this post, as you have stated several details that very well might be used against you in a lawsuit.