An APHugist!
But, no, on your list it would be an anthropologist
The correct answer to this question is: 1 writers who worked to reform aspects of society
Muckrackers were socially conscious journalists who worked to expose the worst aspects of society.
In some instances, encouraging multicuturalism is an appropiate measurement to adopt in some nations, in some others it is not.
Multiculturalism is expected to help develop national bonds as well as common goals.
However, multiculturalism is usually about inmigrants who strive to impose their ways upon their new neighbors. Division is created when any specific group refuses to integrate by not speaking the commonly accepted language or becoming part of the general culture, for example when inmigrants not only refuse to accept the same religion and holidays but they demand their own to be recognized.
Such is the situation in modern Egypt, where multiculturalism has brought conflict between Copts (Christian) and Muslim Egyptians.
Conflicts between these two factions have even escalated to violence in the last 30 years due to these reasons.