Final answer:
Criminologists have not focused on migration and mobility due to their emphasis on individual and neighborhood level behaviors. Recent research highlights the importance of understanding the impact of migration on crime. Ethnicity is not directly related to crime, but rather the cultural and social environment of the neighborhood plays a significant role.
Step-by-step explanation:
Criminologists have historically not paid much attention to questions of migration and mobility because their focus has primarily been on the behaviors of individuals and groups within specific neighborhoods, rather than broader demographic trends. However, recent research in geography and sociology has shed light on the importance of understanding the impact of migration and mobility on crime. By examining how different ethnic groups move through socio-economic and neighborhood changes, it has been found that it is not ethnicity itself that is directly related to crime, but rather the cultural and social environment of the neighborhood.