In fact,it seems that the crows have governed the whole world.Not only they turn the other birds into crows,but also they own the most important companies in the human society.They hire the men for promotion everywhere.They want to do the wonderful advertises to change the traditional opinions toward them.The author become the imployee in this aritical.His actual purpose is to satirize us people.As you can see in our daily life,they are too many bad phenomena.For example,the companies produce many productions at the meantime create serious polution,but through advertising,the people are cheated by them.You can find many examples in this passage,especially the slogans made by the author.