How has the TV shows have evolved in the past few years?

How has the TV shows have evolved in the past few years? the TV shows have evolved with the generations and the new things that they have been asking for, with the new things that have been entertaining them at their moment.
The programs and TV shows have evolved in the years because of many reasons. For example, in USA before of the presidency of Obama the TV programs were more racist, this changed after that history presidency, all this because the government of Obama had as one of the main objectives to eliminate the racism in the United States. This is just a political example of why and how TV has been changing through the years. The TV has also changed because of cultural, economic and social reasons.