Chicago police data reveals how dirty cops spread corruption like a disease

In 2009, after a successful public records lawsuit, the Invisible Institute received data on complaints against Chicago Police Department officers since 1988 -- the complaints often list multiple officers, and by tracing the social graph of dirty cops over time, The Intercept's Rob Arthur was able to show how corruption spread like a contagion, from senior officers to junior ones, teaching bad practices ranging from brutality to falsifying evidence to torture to racism to plotting to murder whistleblowing cops. (more")