Continuity mistake: During Tupac's death scene, a gun can be seen firing too early (muzzle flash) during the bumper shot of the three cars pulling up to the junction.
Factual error: During the beginning, the fully completed WTC was shown, and the year is 1971. The World Financial Center site was a beach at the time, there was no antenna on the North Tower, and the South Tower was not completed until 1973.