In Europe we have many examples of human trafficking where officials had problems to investigate because of political reasons and other problems, mainly understaffed law enforcement.

Every police force asks for more powers, every interior ministry wants more surveillance.

Even with decryption tools, I don't see how traffickers would suddenly not be able to obfuscate their communications.

What becomes very easy is to crack down on dissent though. And being able to communicate with others without any listeners is a security requirement. So freedom and security aren't orthogonal at all.