I recently come out with a book on 20-something Appalachian Pentecostal serpent handlers who publicize their exploits on social media, so I know a few things about what it’s like to cover this unusual group. I’ve handled a lot of topics on the religion beat, but this was one of the most difficult.

First, most of their churches are tough to find, as they typically wish to stay hidden from the media. Worship, to them, is not a spectator sport and services are four hours or more. Most of these churches are tucked into remote corners of eastern Kentucky and Tennessee; south West Virginia, western North Carolina, the northeastern tip of Alabama, western Virginia and northwestern Georgia.

You need to earn the trust of those handling the snakes. You don’t just walk into a service and expect to be handed the right to interview people or take photographs. It takes several visits to for them to know you. I stuck out because I was bringing a 7-year-old with me.

I was also fortunate that the photographer I worked with for my first article on these folks, which ran in late 2011 in the Washington Post, had done all the prior groundwork for this first encounter. That meant that I simply needed to drive 420 miles from inside the Beltway to a famous church in Jolo, W. Va., and stay there three days.

I learned these handlers are some of the most vilified people in American religion. I explain why in a Wall Street Journal “Houses of Worship” column running today. It says, in part:

In 40 years covering religion, I’ve rarely seen a religious group receive as much vitriol as the serpent-handler community. Yet the handlers have a fascinating ability to withstand torrents of abuse and ridicule. I was afraid of them myself once. But after spending time in their churches, I found kind, likable people who struggle to get through life like everyone else.

Thanks to a reality show, "Snake Salvation," on two serpent-handling families that ran in September 2013 on the National Geographic Channel, coverage of this culture has exploded. All sorts of media flocked to eastern Tennessee when one of the photogenic leaders of the movement ended up in court. The following February, Jamie Coots, one of the stars of the reality show, died at the age of 42 from rattlesnake bite, leading to more coverage.

A lot of handlers have faded into the woodwork since then, but there are still reporters out there seeking to cover this culture.