déshumaniser

To dehumanize — treat a person or group as less than human, or (more mildly) to make a system or process feel impersonal and mechanical (un service client déshumanisé). Common in both moral/political writing and everyday complaints about bureaucracy or technology.

• La guerre finit par déshumaniser ceux qui la vivent. — War ends up dehumanizing those who live through it.
• Beaucoup regrettent que les hôpitaux se déshumanisent. — Many regret that hospitals are becoming dehumanized.
• Ce discours cherche à déshumaniser l'adversaire. — This rhetoric seeks to dehumanize the opponent.

Learners sometimes use déshumaniser loosely for anything "impersonal" — but in serious political or historical contexts (war, genocide, colonization) it carries real moral weight, so using it casually about, say, a slow website can sound jarringly overstated.

• quote Discours sur le colonialisme — Aimé Césaire's 1950 essay states plainly, "la colonisation... déshumanise l'homme même le plus civilisé" ("colonization dehumanizes even the most civilized man") — one of the most cited lines in postcolonial theory.