Eco also noted that the Bond villains tend to come from Central Europe or from Slavic or Mediterranean countries and have a mixed heritage and "complex and obscure origins". Eco found that the villains were generally asexual or homosexual, inventive, organisationally astute, and wealthy. Black observed the same point: "Fleming did not use class enemies for his villains instead relying on physical distortion or ethnic identity ... Furthermore, in Britain foreign villains used foreign servants and employees ... This racism reflected not only a pronounced theme of interwar adventure writing, such as the novels of Buchan, but also wider literary culture." Writer Louise Welsh found that the novel "Live and Let Die" "taps into the paranoia that some sectors of white society were feeling" as the civil rights movements challenged prejudice and inequality.