...or someone who killed themselves...

If you want to test this, start up conversations with the combat vets around you. You might not like the answers. That's the vast majority of killers I've known (that I've known).

When I was 18/19 in college, I met a guy through my brother's work that was in his mid 40's. We hung out with him and his girlfriend a lot and he was pretty good friends with my brother. He even met my mom and family, helped her with some construction projects she needed done (dad died when I was 15, so she didn't have that extra help), and was invited to her wedding to my step dad.

Now we knew that this guy was an ex-con (the restaurant my brother worked at hired a lot of ex-cons), but we never really judged or pried into what happened. Honestly, this guy was always just chill, giving, funny, helpful, and respectful. I never got creeped out by him, and i never felt like he was inappropriate with me. We found out through a mutual friend later that this guy used to get paid to bleach the bodies of girls/women that had been raped and killed by others. To this mutual friend's knowledge, our friend hadn't actually done any raping/killing, but I was really struggling to feel much comfort in the fact that he "only" helped guys get away with it. Especially because I was a young, petite college girl at the time.

Anyways, I dont directly know of anybody ive met that has killed someone, but the fact that I know of somebody that did this horrible thing makes me think that you're correct.

The candy shop guy where I grew up was apparently a Serbian specops deserter of the Yugoslavian war.

So yeah, probs.

I've met many people that have killed people. I didn't think that was all that unusual. I know for sure two people I've met had killed people and there's a whole bunch more that range from maybe to probably.

I’ve seen a person get killed, but was lucky enough to not have met the killer.

Old guys who killed fiddy men

I've known several people in the military, who saw combat and have confirmed kills. Half my family, basically.

I took a flight back from Europe with a colleague years ago, we talked for hours. A year later he was found guilty of killing his wife with cyanide.

People do a great job of hiding their demons in a professional setting.

Yeah. There judicial/extrajudicial murders. There is different levels of manslaughter / accidental killings and such. Then there are the different degrees of murder. Even the mislabeling of products hsve brought "manslaughter" charges...

Anyway, yeah, many many people are either directly, or indirectly related/responsible for someone's death.

In a sense, by levels of separation, I am indirectly responsible for a couple different people's death...

Its not something that someone would put blame on me, I mean, I used to party with a lot of people, these people died while "partying"... not while around me, or because of me, but I didnt discourage the "partying" these folks were doing.

As far as i know, i have met only one person like this.

A guy i knew in "highschool" (kinda equilevant) killed his friend a few years later while both were drunk and had just come out of sauna. He thought that his girlfriend had cheated on him with the other guy and woops, axe to the back.

I've been in the army and I met guys there who took part in the Karfreitagsgefecht. They may or may not have killed some poor peasant with an AK but they for certain lost an important part of themselves.

Two people, in fact. First was a Hell's Angels enforcer. Had lunch at a Chinese restaurant with him and a few other people from my former Kung Fu school. Apparently he was a former student and credibly accused of murdering a rival biker gang member, but the jury was hung and couldn't convict.

Second was none other than Shrimp Boy, after he got released from prison for the murders he committed but before he got locked up again for the racketeering charges. Met in in Chinatown literally a few days before the feds closed in on him. Shared a cup of tea with him without knowing his identity and didn't find out until someone present told me who he was days later.

In my younger years, I knew many people who killed others.

I know of two for sure, so probably more.

Edit: 2 murderers, plus one known caused accident. At least.

I've met a murderer before. Knew the guy since middle school. Always was strange...