Final answer:
The 'dangerous class' includes individuals typically classified in the lower class or underclass. This group faces significant socio-economic challenges and may rely on welfare for support.
Step-by-step explanation:
The "dangerous class" mentioned in the question, which includes criminals and the homeless, is typically classified within the lower class or underclass. This grouping represents the United States' lowest social tier, often living in inner cities and facing employment or underemployment challenges. The lower class can further be subdivided into the working class, the working poor, and the underclass.
The underclass, in particular, are those who may be reliant on welfare and live with more stress and poorer health due to their circumstances. While some members of the working class can secure decent jobs with hands-on, physically demanding work, the underclass segment, as described, encompasses the marginalized individuals often struggling with basic needs.