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The Halloween Crime Spike

Posted by James Alan Fox, Crime and Punishment  October 29, 2011 08:00 AM

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I noted last July, just following Boston’s stunning Independence Day surge in homicide, that certain days during the year tend to produce crime spikes. Violence frequently erupts by virtue of the usual activities (e.g., drinking, carousing, and partying with friends) that are associated with particular legal holidays and other unofficial occasions for diversion.

As shown in the chart below, the aggregate number of serious violent crimes (homicide, forcible rape, robbery and aggravated assault) in Boston for 2006 through 2009 spiked significantly upward on three specific dates--January 1, July 4 and October 31.


There is, however, more to the Halloween horror story. The chart below displays the 4-year aggregate number of serious violent offenses that occurred in Boston between the hours of 6:00 pm and midnight. As shown, Halloween night, with its make-believe ghosts but very real assailants, is the worst evening of the year for violent crime victimization. The evening violent crime count on October 31 is about 50 percent higher than on any other date during the year, and twice the daily average.


Probing even deeper into the worrisome pattern, we see in the hour-by-hour chart below that the incidence of Halloween-night violence peaks in the early evening. The most popular hours for gathering Snickers and Junior Mints around the neighborhood are apparently also the prime time for violent crime. During the rest of the year, by contrast, crime incidence rises throughout the evening hours, not peaking until just before midnight.


Halloween is all about things that scare us. Razor blades in candy and abductions of young trick-or-treaters may be well-known urban myths, but the threat of ordinary street crime during the Halloween “witching hours” is very real.

Author's note: You can follow me on twitter at @jamesalanfox or Facebook at Professor James Alan Fox for notifications of new blog postings. Also, you can find me on the Web at or contact me by e-mail at

This blog is not written or edited by or the Boston Globe.
The author is solely responsible for the content.

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About the author

James Alan Fox is the Lipman Family Professor of Criminology, Law, and Public Policy at Northeastern University. He has written 18 books, including his newest, "Violence and Security on Campus: From Preschool through College." More »

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