Just enforcing the law doesn't make their actions not cruel. When the political heads of those agencies in charge of the agencies are talking about "deterrence"

Just enforcing the law doesn't make their actions not cruel. When the political heads of those agencies in charge of the agencies are talking about "deterrence", "self deportation", or enforcing the law in the most maximalist way (e.g.: family separation). Their mandate is to enforce those laws but they're going about it in a way designed to hurt.