In Richmond, CA police identified a mere 25 people causing 70 percent of the city’s violence. When I learned these statistics were similar to ours in Miami, I asked what I thought was a simple question. “If you know who these murderers are, why don’t you just arrest them?” The answer is not so simple. These people often escape arrest and prosecution because witnesses are too fearful to testify. So, no, the police can’t just arrest them even though they’d like to.