Identity Politics & Disinformation Part II: Why did corporations need to control public opinion?

When did corporations realize they needed to control public opinion? How did it start? Why did propaganda become a tool for politicians as well as corporations? It was a manipulation of human emotion never seen before and a fortune was made. To truly understand what is happening now, we must know the history...please watch...no matter what political party you affiliate with or who you are...we are all human and must understand the manipulations happening to our society.