Question: The shooting of Freddie Gray in Boston prompted what incident?

Context paragraphs:
Death of Freddie Gray: On April 12, 2015, Freddie Carlos Gray, Jr., a 25-year-old Black American man, was arrested by the Baltimore Police Department for possessing what the police alleged was an illegal switchblade under Baltimore law.  While being transported in a police van, Gray fell into a coma and was taken to a trauma center.  Gray died on April 19, 2015; his death was ascribed to injuries to his spinal cord.  On April 21, 2015, pending an investigation of the incident, six Baltimore police officers were suspended with pay.

West Baltimore Innovation District: The West Baltimore Innovation Village District is a neighborhood district of Baltimore City that will specialize in attracting startup companies and other employers to West Baltimore.  Following the Death of Freddie Gray and the subsequent 2015 Baltimore protests, government leaders decided to launch the innovation district as a way to attract redevelopment and revitalization to the areas hardest hit by the protests.  The district includes the neighborhoods of Mondawmin, Coppin Heights, Penn-North, Reservoir Hill and Bolton Hill.

Crime in Baltimore: Baltimore, Maryland, U.S. is infamous for its very high crime rate, including a violent crime rate that ranks high above the national average.  Violent crime had spiked in 2015 after the death of Freddie Gray on April 19, 2015, which touched off riots and an increase in murders.  The city recorded a total of 344 homicides in 2015, a number second only to the number recorded in 1993 when the population was 100,000 higher.

Freddie (dance): The Freddie was a short-lived 1960s fad dance prompted by the release of the songs "I'm Telling You Now," and "Do the Freddie," both by the British band, Freddie and the Dreamers.  "Do the Freddie" had been a #18 hit in the United States in 1965, and American dance craze stalwart Chubby Checker had then made it to #40 with the minor hit "Let's Do the Freddie" in that same year.

Rough ride (police brutality): A rough ride is a form of police brutality in which a handcuffed prisoner is placed in a police van without a seatbelt, and is thrown violently about by driving the vehicle erratically.  Other terms for the practice include "nickel ride" (a reference to carnival rides), "cowboy ride", "joyride", "bringing them up front", and "screen test" (as the prisoner may hit the protective screen behind the driver).  Rough rides have been implicated in a number of injuries sustained in police custody, and some commentators have speculated that the practice contributed to the death of Freddie Gray in Baltimore, Maryland, in April 2015.  Throughout the U.S., police have been accused of using aggressive driving tactics to "rough suspects up", resulting in numerous injuries, and millions of dollars of damages awarded to victims and their families.

Shooting reconstruction: Shooting incident reconstruction is an examination of the physical evidence recovered or documented at the scene of a shooting.  Shooting reconstruction may also include the laboratory analysis of the evidence recovered at the scene.  The goal is an attempt to gain an understanding of what may or may not have happened during the incident.  Once all reasonable explanations have been considered, one can evaluate the significance of witness or suspect accounts of the incident.

Etan Mintz: Rabbi Etan Mintz is an American rabbi, activist, writer, and the spiritual leader of the historic B'nai Israel Synagogue (Baltimore) of Baltimore.  Rabbi Mintz is leading the revitalization of the oldest continually active synagogue in Maryland and one of the oldest standing synagogues in America.  Mintz is an active proponent of Jewish pluralism and outreach to support other minority communities.  He is a nationally sought speaker, writer, and organizer on Judaism, racial justice, and Jewish values.  In response to the 2015 Baltimore protests after the shooting of Freddie Gray, Rabbi Mintz led a multiracial, interfaith group of clergy to increase community cooperation in Baltimore.  Rabbi Mintz has advocated for strengthening racial relations and has advocated for a more welcoming and inclusive vision of Modern Orthodox Judaism.

Geofeedia: Geofeedia is a social media intelligence platform that associates social media posts with geographic locations.  The company raised $3.5 million in their second round of venture capital in October 2014.  At the time, major clients included the Los Angeles County Sheriff's Department and Dell.  Clients could visualize posts in an area in realtime and analyze the contents.  Services mined by Geofeedia include Instagram, Twitter, Periscope, Vine, YouTube, and Sina Weibo.  The company raised $17 million in Series B funding in early 2016 from Silversmith Capital Partners and reported 250% revenue growth in 2015 with clients including Mall of America and the NCAA.  At this time, 60 people worked for the company.  In October 2016, the American Civil Liberties Union published a report that the company's technologies were used to identify and arrest protestors in events such as the 2015 Baltimore protests that followed the death of Freddie Gray.  Facebook, Instagram, and Twitter, who were named in the report, restricted Geofeedia's access to user data as a result.  Facebook had used the service itself to detect an intruder uploading photos taken inside the office of its CEO, Mark Zuckerberg.

2015 Baltimore protests: On April 12, 2015, Baltimore Police Department officers arrested Freddie Gray, a 25-year-old African American resident of Baltimore, Maryland.  Gray sustained injuries to his neck and spine while in transport in a police vehicle.  On April 18, 2015, after Gray's subsequent coma, the residents of Baltimore protested in front of the Western district police station.  Gray died the following day, April 19, 2015, a week after the arrest.

Nate Larson: Nate Larson (born March 16, 1978) is a Baltimore-based artist and photographer known for examining the role of belief in contemporary American culture.  He also has worked collaboratively with Marni Shindelman since 2007.  Their most well-known collaborative project is Geolocation, which tracks and photographs coordinates of Twitter posts.  The project includes both gallery and public art components.  Larson most recently made portraits of Baltimore residents during the uprising in the aftermath of the death of Freddie Gray.

Supporting paragraphs: Etan Mintz 2015 Baltimore protests
Answer: 2015 Baltimore protests