Researchers have been looking at this for a number of years, and the conclusion that most people reach is "no." ... There is no direct link, or there is no differential probability of crime due to the size of your immigrant population.
“We don’t divulge matters that we work hard on to the police, and the police know that about us,” Mitchell said. “We're not sharing information that may be helpful in some sort of investigation. That's not or role." That code of silence lead to the demise of a Cure Violence group in Chicago, according to Jeffrey Butts, director of the research and evaluation center at John Jay College. "The precinct can feel aggrieved to find out this whole episode of violence that just happened was known, that people knew that it was about to happen and no one told the police,” Butts said.
In the wake of the San Bernardino shooting, politicians are being shamed for online posts about gun control with many critics saying that "prayers won't do anything" to stop more attacks. Jeffrey Butts, director of the Research and Evaluation Center at John Jay College of Criminal Justice in New York, joins CBSN with more insight.