Complex sentence: Skeptics have decried kleptomania as an invalid psychiatric concept exploited in legal defenses of wealthy lady shoplifters.After the twentieth century, kleptomania was strongly linked with the increasingly blossoming department stores, and "department store kleptomaniacs" were a widely held social stereotype that had political implications.
Split into simpler sentences: Skeptics have decried kleptomania as an invalid psychiatric concept exploited in legal defenses of wealthy lady shoplifters. During the twentieth century, kleptomania was strongly linked with the increased prevalence of department stores, and "department store kleptomaniacs" were a widely held social stereotype that had political implications.