US policeman charged with murder had 20 earlier complaints

A white Chicago policeman caught on tape shooting dead a black teenager had at least 20 complaints filed against him but was never disciplined, a database shows, in the latest such incident to inflame racial sentiment in the US. The graphic video released shortly after officer Jason Van Dyke was charged with first-degree murder Tuesday has also reignited impassioned debate about the use of force by law enforcement in the United States, with Chicago left dangerously on edge. Protesters there have