Can you make citizens’ arrests for ‘unimaginably stupid’ conduct?

From the Car­roll Coun­ty Times of West­min­ster, Maryland:

Accord­ing to The Sacra­men­to Bee, a fam­i­ly in El Dora­do, Calif., is in trou­ble after spend­ing a fam­i­ly out­ing mak­ing pipe bombs and then test­ing them.… Accord­ing to the Bee, Justin Lee Brown, 29, was arrest­ed on sus­pi­cion of sev­er­al felonies. He, his girl­friend and their two sons, ages 6 and 8, had one of the more inter­est­ing fam­i­ly out­ings ever.… When asked about the activ­i­ty, Brown said he learned how to make bombs from friends and “decid­ed to try it so he could show it to his kids.” … Brown is in jail and Tiffany Dean, the mom, is being inves­ti­gat­ed for what deputies call “unimag­in­ably stu­pid” conduct. 

I’m hold­ing my breath, hop­ing that no asso­ci­a­tion with the pagan com­mu­ni­ty or Spi­ral Scouts will come to light. That’s what came to mind first, hon­est­ly. If it had hap­pened in Alaba­ma instead of Cal­i­for­nia, though, I’d be rea­son­ably safe in assum­ing some degree of rela­tion to Dean and Brown. I’ve nev­er regret­ted mov­ing to Georgia—specifically, to metro Atlanta. I’d be quite hap­py to move else­where, but as this sto­ry shows, you can find red­necks anywhere.