When Attica exploded, there were only 10,000 people in the state prison system; now there are 10,000 on Rikers alone.[Editor's Note: The 1971 Attica state prison riot left 43 people dead, including 10 guards, and was a spark for the prisoners' rights movement of the 1970s.]Although the draconian Rockefeller drug laws have been reformed in recent years and the prison population has declined somewh