Had someone make a nasty post about me in a local Facebook group, it triggered Complex Post-Traumatic Stress Disorder

I'm 36. I'm autistic and epileptic.

I live in an apartment building that has a dumpster in the parking lot. I put my garbage in it and tear up anything with my name in it, since we have people that dumpster dive.

On Monday, someone posted anonymously in a private Facebook group that they found garbage in the parking lot of a business nearby and could identify who owned it (according to them, via a piece of paper but I know that I tore anything with my name into several tiny pieces, so they obviously spent time putting the pieces back together). They didn't include a video or anything, but the fact that they named me disturbs me.

We obviously have dumpster divers (they won't find anything good in my garbage). People commented, some defending me (saying things such as "how do you know she did it" and pointing out about dumpster divers) while others bashed me, one was even from a bully that went to high school with me that made a serious yet false accusation against me (saying I smeared shit on the walls of a bathroom stall). I commented that it was inappropriate to accuse me of this without proof, that there are two sides to every story, and (to the bully) that they made me the Carrie White of their school even though I'm not religious, didn't start my period late, I don't look like her, nor is my name close to hers. I added that ther bullying in school contributed to my Complex Post-Traumatic Stress Disorder and that Post-Traumatic Stress Disorder is for more than war and rape victims and perhaps they should learn about that. I reported the post (since there were no pictures, just claims of putting more video cameras around and that they'll be sending footage they find to the police, who haven't contacted me yet) and, to my surprise, a few hours later it was taken down - I can't see the post anymore but can see that I replied to a bully; however, I can't see what I said. I noticed the same thing happens in other Facebook groups I'm a member of (that aren't local, I'm a member of one local group only) when I comment and the post is deleted, so I'm guessing the post was deleted from the local Facebook group too. Either way, good riddance. It's also disturbing that they would make a post about me and have bullies comment. I'm lucky it got taken down (if that's what happened).