What Black Friday means in India:

Black Friday is a film based on the 1993 serial bomb blasts in Mumbai which many believe were organised as retaliation for the Bombay riots… It was featured at the Locarno Film Festival and received widespread praise. [Link]

What it means in most of America:

The news media frequently refer to Black Friday as the busiest retail shopping day of the year… In many cities it is not uncommon to see shoppers lined up hours before stores with big sales open [early in the morning]… shoppers often rush and grab, as many stores have only a few of the big draw items. [Link]