Massachusetts Legal Developments Blog

Some Say ShotSpotter Could Have Stopped a Fourth of July Shooting in Cambridge: But How Reliable Is It?

On July 4, 2026, the City of Cambridge announced that a Public Works employee had died in a Fourth of July shooting. Police subsequently arrested a suspect who reportedly acted as a lookout while other masked men attacked the victim. The other individuals are (as of this writing) still on the loose. While the investigation continues, ShotSpotter technology once again takes center stage. Could this audio system prevent future shootings? What can you do if you face ShotSpotter evidence in a Boston murder trial?

Could ShotSpotter Have Prevented This Shooting?

Some are saying that if Cambridge’s City Council had not canceled its ShotSpotter program, this employee would still be alive. While the projectiles would have still struck the victim, ShotSpotter might have alerted first responders to the incident immediately. This may have allowed the victim to receive emergency medical attention much faster. As it happened, first responders took a full hour to reach the victim. 

However, many people forget that ShotSpotter is not a perfect system. In April of 2024, the ACLU of Massachusetts reported that since first implementing ShotSpotter in 2012, Boston Police experienced false alarms 70% of the time. In other words, the majority of ShotSpotter alerts sent police rushing to (mostly poor) neighborhoods for no reason. 

Would it have been any different during the recent Fourth of July shooting? Judging by these statistics, the software would have had a 30 percent chance of ensuring the victim received medical care sooner. However, one also has to consider the fact that fireworks cause many ShotSpotter false alarms. On the night of the Fourth of July, the air would have been filled with the sound of pyrotechnics, making false alarms even more likely. 

Why Did Massachusetts Cities Cancel ShotSpotter?

Most police forces across Massachusetts canceled their contracts with ShotSpotter for one simple reason: It’s not very effective. Statistics show that it is about as reliable as flipping a coin (at best), and in one instance, it failed to detect all seven shots fired by a suspect. Various city officials and police representatives have accused the company of exaggerating its technology’s capabilities. 

From the perspective of the average resident, however, the concerns have more to do with privacy and civil liberties. For ShotSpotter to function, it must constantly collect audio from neighborhoods. The technology inevitably targets low-income areas mostly occupied by populations of color, creating a dystopian scenario where the “government is always listening.” 

Can a Boston Criminal Defense Attorney Help Me?

A criminal defense attorney in Boston may be able to help if you face charges related to shootings. ShotSpotter technology could become relevant in a trial, and defendants may want to raise the same privacy concerns that many residents have. For more information, contact Edward R. Molari, Attorney at Law, at 617-942-1532.