Shame is the emotional drive that prevents people from making lies of commission, i.e. false representations of reality. Individuals (e.g. psychopaths) and racial populations (e.g. Semitics, Africans) that have no feelings of restraint about lying for personal gain are therefore described as “shameless”.
Guilt is the emotional drive that prevents people from making lies of omission, i.e. keeping silence on matters of importance. The Asian shame cultures are illustrative of the difference, and their byzantine culture is the result of many strange acrobatics to avoid getting directly at the truth. Individuals and racial populations that have no pangs of conscience about enshrouding the truth are therofore described as “guiltless”.