What is cultural imperialism?
Cultural imperialism is the spread of one culture at the expense of others, and is an increasing problem in an increasingly interconnected and interdependent world. What is hegemony? Am I at risk?
Hegemony is a term used to describe a social order in which subordinates comply with domination by internalizing their rulers values and accepting the "naturalness" of domination. Every social order tries to make its own combination of arbitrary decisions seem natural, and all hegemonic ideologies offer explanations about why the existing order is in everyone's interest. This idea is used to explain why people conform without coercion.
All stratified societies have a hegemony. So if you are reading this text, you certainly have been exposed to a series of values which justifies the "naturalness" of why the people in power got there. What effects do mass media have on global and local culture?
Mass media certainly has the ability to homogenize culture. However, it is also possible for local events to be presented to a wider audience through the use of mass media. Often the results can be unexpected. | 
2002 McGraw-Hill Higher Education