Motive for Targeted Individual program to homogenize culture?

In the book Working toward Whiteness by David R. Roediger there is an excerpt in which the author cites the work of a professor named Ellwood Cubberly who wrote a book published in 1909 titled "Changing Conceptions of Education" and this porfessor was discussing issues he saw with "new immigrants" at the time who were largely eastern and southern European. The Author discusses breaking up the new immigrants communities Roediger writes of Cubberly: "Cubberly later drew a policy lesson from these distinctions: "Our task is to break up their groups or settlements, to assimilate and amalgamte these people as a part of our American race and to implant in their children, so far as it can be done, the ANglo-Saxon conception of law and order and popular government." This magic was to be worked on distinct "racial" groups as wekk as inferior ones." So perhaps a social control system which destroys community and family ties is done so that the targeted cry out for Law and Order and elimantes diversity in culture.