Bederman: Race, Class, Gender, and ???

As I read the chapter about Ida B. Wells' work, I see that Bederman invokes a common historical and literary trope of race and nature (nature as savage and uncontrolled, the role of white supremacy in controlling it). Bederman seems to use this to define the conflict in terms of the space between the waning importance of Victorian restraint vs. natural "savage" instinct in which white, middle class men found themselves. The complicity of American culture to lynching recalls Roediger's discussion of minstrel shows as a place where men were allowed participation in savage, infantile behavior. The trouble, however, seems to be Bederman's focus on class and race only--her approach seems to consider only marginally a factor that Roediger included: the growing immigrant population. I'm left wondering if this is one reason why, while I find the author's investigation interesting and important, I feel that something significant is missing as I read this text. To her credit, she makes clear in Chpt. 1 the complexity of the historical moment and topic she is investigating. But her choices do not seem to illustrate this complexity. Other thoughts on this? What about her methodology? Acceptable? Effective? I am not far enough along to answer this, but I'd like to hear what others think.