<human>: Actually it was about a year ago. I'm sitting at my desk working and my boss comes over and asks me to come with him. He won't tell me why. We go to HR, and sit in an office and this woman from HR and the head of security come in. They slide a piece of paper over to me and it's a screenshot of my Facebook profile. My page is completely private, they can't see anything except my cover image and profile photo. Well, my cover image was a nice forest landscape. With the words KILL EVERYONE on it from /r/Offensive_Wallpapers. (I can't find the image now)

They are concerned about me. I explain that it's just dark humor.. I found it online and thought it was kind of ironic or something because it's a nice landscape and it's got KILL EVERYONE on it and I have a dark sense of humor. They don't understand. At all. They want me to leave work immediately and go home while they 'investigate'. They wouldn't tell me what that meant. I don't know if they searched my work computer or checked my background again or called the FBI or what. The head of security walks me to my car. It's a long, awkward walk. It's a big building with a large parking lot. It takes me about five minutes to get to my car. I try to assure him I'm not crazy I'm not going to shoot up the workplace or anything, there's no reason to be concerned. He says they'll call me. I immediately changed the image when I got home. This was a Monday I think. I don't get a call until Friday that I can come back in Monday. Phew. There were no repercussions. Free week off work I guess.

Can you provide a brief overview of the text?
<bot>: used an /r/Offensive_Wallpapers image as a Facebook cover photo and got escorted out of work by security and almost lost my job.