(CNN)After decades of a downward trend in crime, residents in some large U.S. cities wonder if a reversal is coming. If you live in Baltimore, you know that May, with 43 homicides, was the deadliest month since 1972. Or if you are a Houstonian, you've probably heard that murders were up 45% through April compared to the same period in 2014.
The latest statistics in Milwaukee show a 103% spike in murders year-to-date compared with a year ago.
The spike in killings in these major cities would be troubling in itself at any time, but it is especially troubling now, when policing practices, race and social policies are regularly in the news.
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