Affiliate Marketing Secrets

This was on an open, public facebook account with my name tagged into the photo. I didn’t know I was tagged until just yesterday, where I promptly untagged myself and reported the comments. Before untagging myself, I took a video of all the comments made. The photo had me and a “supposed friend” at a party. These statements were made on December 28th, 2010. I was tagged with these statements for 2.5 years. My picture is still affiliated with these statements. This has been reported to facebook.
Individuals 1 and 2 I knew from high school. Individual 1 harassed me in high school and then later in college. We never interacted–we never hung out or talked to each other. He hated me from the start and it was until much later that I learned it was because I was dating a girl he liked. This continued for several years. I was afraid of him in high school and is the reason why I learned martial arts. Individual 2 I knew in high school. We rarely interacted individually unless a group of friends were present. Otherwise, lengthy conversations never took place.
Individual 3 I only knew threw my ex’s (girlfriend at the time) brother as he was dating individual 3. I considered her as a friend, but later learned that she never liked me from the beginning. Through slander and libel, she caused me a lot of grief. I lost friends, had major depression and anxiety, and had people approach me for things I hadn’t done, for which both my ex and her brother denied and defended me for. I am still friends with my ex and her brother.
Individuals 1, 2, and 3 were all friends at the time. Individual 1 is no longer friends with individual 2 or 3. Individuals 2 and 3 are still friends. They have been known to turn fact into fiction with grandiose exaggeration.
Two of the individuals I knew from high school. The first individual and I talked every now and then, but never hung out. The second individual simply hated me from the beginning because I was dating a girl he liked. This I didn’t know. I was afraid of this individual in high school. High school graduation was 2007. The third individual I had only met recently through a friend, but had minimal interaction with, which changed over time as she became slanderous to my name. Other people randomly came up to me angry for things that had never transpired. Due to the slander, I lost several “friends.”
These are direct quotes.
Individual 1: “I hate that guy so much :P”
Individual 2: “I know! He is such a jerk, I mean look at this photo, he clearly doesn’t understand me so his blood vessels exploded everywhere.”
Individual 1: “What an ***.”
Individual 2: “Exactly. I hate him. :'(”
Individual 1: “Let’s sell him off to aggregate farmers in Nepal.”
Individual 2 (This quote in particular was shocking and upsetting):
“I was going to kill him but that plan makes money and less blood is involved. I second
that motion.”
Individual 1: Passed.
Individual 2: “I just noticed that (my name) and I have photos of him and I. Yep, totally hate him.”
Individual 1: “What a fagmuffin.”
Individual 2: “Oh totally. Wait, no, he is pumpkin spice.”
I don’t entirely understand that statement.
Individual 3: “That’s totally what happens when (my name) pisses me off. See? He’s even hanging his
head in shame of what he obviously did wrong.”
Individual 2: “Sooo true. This is why we hate him.”
I am highly educated in science, but not with the law.
Would this be a case for libel, something else, or perhaps nothing at all?

I recently went to MEPS and after 3 continuous days I was able to get my NAVY CTN rate that I so badly wanted. I have a clean background; I’ve been cleared for a California Guard Card twice and worked for the LA Sheriffs Department for 2 years which required an extensive background check. My problem is that I was recently Laid- Off from my job as an Intern at a Financial firm. 2 other employees were also let go but they were more disgruntled and decided to delete contact lists, company files, marketing material on their computers before leaving. I left on good terms, but just a few days ago I received a notice from my previous employer that “I had attempted/proceeded to delete company files on my computer, though everything was recovered.” It’s completely unfounded as I left my computer untouched after I was given the notice to leave the premises. The letter I received was from the In-House legal attorney claiming that I had ‘attempted’ to do this though theres no real evidence to support their claims and they admitted that everything was recovered.
My question is how should proceed after receiving this notice and will this affect my background investigation for Top Secret clearance because I consider it to be ‘defamation of character’ and ‘libel’?
I have a clean background, no drug usage, good credit and feel that this minor accusation may lead to problems during my background investigation. Can anyone out there help me?