Every year during Thanksgiving this question comes to my mind Why do people call the day after thanksgiving "Black Friday"? It could have been called Green Friday, Discount Friday, Cheap Friday,or they could have even called it"The Beginning of Christmas Shopping Day".
According to what I have heard, read, and seen; some group in society, most of the time does not associate anything good when the term black is used. For example, when I hear the term "Black Market", I know there is almost nothing good associate with it. Furthermore, when scientist talked about the "Black Hole" we know that they are talking about something bad is happening to our earthly environment. There are many more terms I can think about, such as, "Black Magic", "Black Out", "Black Neighborhood", "Black Planet" and "Black Sheep". All of these terms has not convey a positive feeling, rather it is a negative one.
Since there is almost nothing good associate with the term Black, I believe "Black Friday" is way to get the consumers to go out and spend money they don't have. Black represents darkness, where there is darkness, people can not see. When people can not see, people make decision base on feelings. When we make decisions base on feeling, we will be misled.