Here are some exaggerated tales of the misfortunate event.
Story Version 1:
The black teenager had just come from a shopping area with the items that he and a friend (also black) acquired. As the two teens were heading back towards their homes, they were stopped by a police officer who demanded to know where they were going and where the items came from. The officer assumed that the teen had stolen the items, and told him that he was detained. The teen questioned the officer's actions, but the officer pulled out his pistol and demanded that he comply. The black teen had his hands up to surrender, but the officer fired a first shot which missed. The boy screamed and began to run in terror. The police officer let out a furious growl saying, "Come back here you trash!" Then, the officer fired several more shots at the boy who had his back turned. The boy fell to the ground, where he died.
Story Version 2:
The black teenager had just come from a shopping area with the items that he and a friend (also black) acquired. As the two teens were heading back towards their homes, they were stopped by a police officer who demanded to know where they were going and where the items came from. The officer assumed that the teen had stolen the items, and quickly moved in towards the teen to place handcuffs on him. The teen resisted at first, which was all the officer needed. The officer then attacked him, knocking the boy to the ground. He looked at the black teen with a devilish smile across his face and said, "This is what's going to happen to everyone of your particular skin color!" The officer then fired several shots at the boy as he was still on the ground. Then the officer kicked the boy's corpse, spat on him, urinated on the ground surrounding the corpse, stuck a cross in the ground, burned the cross, and shouted "white power!".
Story Version 3:
The black teenager had just come from a shopping area with the items that he and a friend (also black) stole. As the two teens were heading back towards their gang hideout, they were stopped by a police officer who likely received a call on a theft. The officer assumed that the teen had stolen the items, and told him that he was detained. In response, the larger black teen charged at the police officer, somehow able to overpower him, if only slightly. The officer, now frightened by the savagery of the teen, pulled out his pistol and fired a warning shot. One shot became two, and two shots became three. Eventually, the teen was on the ground, dead.
Long Story Short (IMO)
Kid stole something, cop tried to stop him, kid attacked cop, cop shot kid, Ferguson riots begin. I bet this issue wouldn't be as big if the dead kid wasn't dark-skinned.