Missionaries using secret audio devices to evangelise Brazil’s isolated peoples

Solar-powered units reciting biblical passages have appeared in the Javari valley, despite strict laws protecting Indigenous groups

Archived version: https://archive.is/20250727103226/https://www.theguardian.com/global-development/2025/jul/27/missionaries-using-secret-audio-devices-to-evangelise-brazils-isolated-peoples

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