When you're dealing with something like this, silence implies consent.
Nonsense. Sez who? I haven't heard a comment from John Goodman and don't hear anybody saying he "consents" to Rosanne's comments.
This is a special meaning of the word “imply” I suppose. Normally it means what follows by logical deduction. Here it seems to mean you better signal your virtue so the mob doesn’t turn on you as well.