BBM
I was thinking about the Amish, when you posted about "othering" on your last post. I've only known of one really horrific murder, by an Amish man, at least where I'm at, and there are lots of them here, in parts of Ky. Mostly in the foothills. That man turned himself in to LE a few years after he committed the murder.
However, the Amish are the poster children for "othering". One cannot be LGBTQ and be Amish, they use corporal punishment, have insulated themselves from the outside world-liness, divorce is highly frowned upon and can be grounds for excommunication, and females must wear head coverings to denote their marital status (I think beards, or lack of, denote males status). Although pleasant, and cordial, to us English, we are the "others" to the Amish. They do have their own internal issues, as life in their community is not just some bucolic dream world, but they solve most among themselves.
The Amish, may not have issues with violence, in the same way as the "English", because they also have no electricity to constantly power hours of television, computers, and video game entertainment, either. They don't spend significant amounts of time, in front of these devices. Instead, because of their "othering", they must rely on a strong sense of community. Neighbors will give freely of their time to help one another, and kids work in the family business, doing apprenticeships, to learn a trade.
I don't know how many times, in interviews, after some horrific act, that I've heard the neighbors say, "Seemed like a nice guy, but, we didn't really know him . I spoke to him/her occasionally at the mailbox.". I don't think that it's about any views about firearms that the Amish own. If an Amish kid wanted to commit suicide, with their family's firearm, they could attempt to, just as easily as an English kid could. I think it's about the Amish's strong sense of community, and caring for one another. They have to, if their community is to survive. They know one another in their community, they eat together, worship together, and work together.