He makes his people lie or do stupid and demeaning things as a way of testing their loyalty to him.
Well, this isn't a dictatorship, and I ain't playing along. I'll call it what I choose, not what I'm told.
When pressuring a witness, etc, the gangster will always end the intimidation with making the victim repeat whatever humiliating or farcical line the gangster wants to be the new reality. It's forcing a visible submission.