We're talking about Supernatural Season 3, Episode 12 "Jus in Bello." Smoke and the demon fling happening everywhere! Liz brings everyone way down with the story of the recent mass exorcism in Panama. She's very sorry.

Sources:

• https://abcnews.go.com/International/wireStory/killed-14-tortured-panama-exorcism-terror-rituals-68327776
• https://www.bbc.com/news/world-latin-america-51144629
• https://abcnews.go.com/International/wireStory/cult-killers-sentenced-50-years-prison-panama-81547592
• https://apnews.com/article/f858183515265252e49c10389444bb74
• https://aldianews.com/articles/culture/social/mama-tatda-panamanian-church-virgin-freed-colonists-60s/60689
• https://www.panamaamerica.com.pa/provincias/iglesia-luz-del-mundo-se-pronuncia-y-rechaza-crueldades-cometidas-en-la-comarca-ngabe
• https://www.panamaamerica.com.pa/provincias/rescatan-15-personas-privadas-de-libertad-por-secta-en-la-comarca-ngabe-bugle-1154037