They were stoned to death simply for taking a crap on Saturday. Literally. To this day, Hasidics hold it in when they have to go on the Sabbath. Not sure how holding it in doesn't qualify as work, but then again I'm not sure why it's worth murdering somebody for sitting on the crapper on a Saturday.
The Chosen* people of the god called Yahweh* utilized barbaric forms of the death penalty because that's what everybody did back then in the region.
The Bible commands to do no toil on the Sabbath. People were very literally stoned to death back then for gathering sticks for the fire for cooking, they were even stoned to death simply for taking a crap. Stoned to death. For taking a crap. Taking a crap. Literally.
Being active and posting on a meme generator on the Sabbath would qualify as a sin, and thus worthy of getting stoned to death. It is the Shabbat. It is the day of rest.