Movies
There I was in prison. And one day I help a couple of older gentlemen make some free telephone calls. They turn out to be, let us say, good family men.
— Cosmo ‧ Sneakers

Behind the line May contain spoilers.
Our reading
An editorial interpretation.
The speaker tells a story with a wink. Helping two older gentlemen make free phone calls sounds harmless, and then 'let us say, good family men' hints, with deliberate vagueness, that they were something else entirely. The humour lives in that polite euphemism.
Context reviewed