You should demonstrate a clear understanding of the cultural imperialism thesis. You will need to consider the main criticisms of the thesis (Tomlinson is a major critic, one who discusses reverse cultural flows). Good answers will go beyond simply comparing and contrasting the various arguments, and will construct a clear argument about the thesis. Use research studies (there are plenty of these available) in support of your argument. The books edited by Artz and Kamalipour are particularly useful). The material on the Hollywood industry is also relevant to the question.