Sometimes evil can readily emerge even in the midst of ardently professed good.

You might say that this is a dual-use phenomenon.

https://www.forbes.com/sites/lanceeliot/2022/06/01/ai-ethics-and-legal-ai-experts-greatly-alarmed-about-dual-use-ai-which-empowers-so-called-doctor-evil-projects-including-possibly-for-ai-self-driving-cars/?sh=337064d577ff