A judge last month rejected the city's effort to keep secret most of the files and videotapes documenting the arrests, leading to their release.
Christopher Dunn, associate legal director at the NYCLU, said the documents "reveal that the long detentions of the thousands of protesters arrested for minor offenses at the convention were the result of deliberate policy decisions by the NYPD."
Records in the document cache also show that many officers, sergeants and lieutenants made toxic exposure complaints about the holding pen on a Hudson River pier where arrested protesters were processed. The officers' complaints included claims of exposure to asbestos, carbon monoxide, sludge, oil, fumes and toxic materials.