They're not autistic. Kids with autism usually flap their hands as a stim, usually for a visual stimulation caused by the movement of their hands, not in reaction to anything. Hand flapping during excitement/anger is usually excess energy looking for a way out. A form of expression. Many 3 yr olds don't play cooperatively with others at school.
That year one of the most influential rappers to ever hold a microphone released his breakout album. In January 1993, Tupac Shakur was 21 years old. He was about to drop his second album, and the first feature film he starred in had been a success. He was on the cusp of superstardom. Kevin Powell, a young journalist at Vibe magazine, was trying to talk his editors into taking a story.
It was writen after Tupac was released on bond from prison. His death on September 13, 1996, sent this albulms record sells through the roof. Tupac was shot down in a ambush in Las Vegas after a Mike Tyson fight on September 11, 1996. He managed to hold on for two more days dying at the age of 25. Many were surprised that he died. Tupac was seen as such a strong person, after all he had survived five bullets before.