What metaphors are used in The Prague Orgy by Philip Roth?

On pg. 73 of the text, Olga remarks that "To be fucked is the only freedom left in this country". Thus, The Prague Orgy symbolizes freedom, since sexual acts are the only freedom left. However, she also speaks metaphorically here. It is not just a sexual freedom...... "to be fucked" can also mean for someone else to deceive and hurt another person. Olga has the freedom to do this to her husband, Sisovsky, but chooses not to do so.