Since it goes without saying that adult performers in the pornography industry almost always freely contract their services, why would some feminists be so anxious to claim that in this matter appearances are deceptive: that they have in fact been coerced?

Since it goes without saying that adult performers in the pornography industry almost always freely contract their services, why would some feminists be so anxious to claim that in this matter appearances are deceptive: that they have in fact been coerced? You often hear the same claim made about another arm of sex commerce: prostitution. What about that?