Conflict of interests between communities has nothing to do with a community limiting its own people's rights or resorting to atrocities in order to make the job of someone in the community easier.

See, this specific situation has happened because a worker decided that their job will be accomplished easier this way. For the mass surveillance or denial of privacy for people is based exactly on the same idea: If they have access to people's communications they will spend less time and money to do their job in comparison to more involved traditional methods. I find it ridiculous that people are expected to be harmed or denied privacy in order to improve the efficiency in an institution.