Brandon Milton’s crime might have been minor compared with the hundreds of murders and shootings in Chicago every year. .........p>....The effort springs from a Yale University sociologist’s finding that these “hot people” are far more likely, as a result of those social ties, to become a victim or perpetrator of deadly violence themselves.........Each person on the heat list is given a number — a heat index — rating how likely it’s deemed that person will be involved in a murder.Starting this past summer, McCarthy doubled the number of officers in the fugitive unit — in part to focus on these...