Back in 2013, after watching my favorite movie/mini-series, “Lonesome Dove,” for at least the 10th time, I made a comment on Facebook about one of the scenes.

If you haven’t seen “Lonesome Dove” or at least read the novel, set this column aside right now and go correct that error or we can’t be friends.

Just kidding. Sort of.

The novel is set in the final days of the Old West, and it centers around the relationships between several retired Texas Rangers and their adventures while driving a herd of cattle from Texas to Montana.

Several of the scenes in the mini-series are iconic, and some are disturbing. But the one that always made me hit the fast-forward button on the remote control was the river crossing scene when young Sean O’Brien (played by Bradley Gregg) gets taken out by a swarm of water moccasins.

I’ve always hated snakes and will never veer from my belief there are two kinds of snakes: dead ones and ones that need to die.

Please don’t come at me with the “poisonous vs. non-poisonous” argument, either. I didn’t pay enough attention in school to know which snakes are going to bite me and kill me and which ones are just going to bite me and cause me pain.

I feel the same way about spiders, by the way.

Back to “Lonesome Dove.”

In the river crossing scene at the end of the first part of the four-part mini-series, the cowboys are almost across the Nueces River when someone screams. Young Sean O’Brien is then shown battling a nest of water moccasins, and the scene ends with his head popping out of the water — and one of the nasty spawns of Satan chewing on his face.

Sean dies at the start of part two. A lot of folks die over the span of three more episodes. I cried at a couple of the deaths (I won’t spoil it for you because I know you’re about to read the novel or watch the mini-series), but Sean’s death is the one that caused me to lose sleep each time I watched the mini-series.

I mentioned that in a Facebook post back in 2013, and a few days later, a photo popped up on my feed.

It was Bradley Gregg (Sean) holding a handwritten sign that said, “Hey, Jack Stallard. I’m still alive. Thanks for the support. Sean O’Brien.”

Turns out, Bradley Gregg and I have a mutual friend. She told him about my post, and he sent me the photo. It was a good reminder that movies are just movies, and Bradley/Sean is OK … but I still refuse to watch that scene.

About a week ago, I joined a Facebook group called “Fans of Lonesome Dove” and thought it would be fun to post that photo.

It was fun — until folks did what they usually do when they have nothing better to do and started arguing.

The argument was about the snake scene, and it was started by someone who claimed the scene was not accurate because water moccasins usually travel along the top of the water, not under the water.

I resisted getting involved in the argument, which was joined by a self-proclaimed expert and several others who claimed everything from being attacked by moccasins while paddling a canoe to reading about a skier being killed by a nest of the deadly critters on a Dallas-area lake years ago.

Full disclosure here: I don’t know how accurate the river crossing scene and young Sean O’Brien’s death are in the mini-series, and I don’t know who is right or wrong in the Facebook arguments about the scene.

I don’t care, and I refuse to argue about a classic scene in an iconic movie that came out 35 years ago.

That said, if someone thinks they can explain to me why the lovely Lorena Wood fell for that scoundrel Jake Spoon instead of trustworthy Dish Boggett, I’m all ears.