Mayor Marty Walsh, Boston Police, newly-appointed Boston Police Commissioner William Gross, community groups and residents will come together for National Night Out at the Mildred C. Hailey Apartments on August 6. There will be free kids' activities, food, entertainment, awards for Boston's crime watch groups and more. This event is taking place from 4 to 8 pm at 90 Bickford St., Jamaica Plain. National Night Out started in 1984 by bringing civic groups, community organizations, police, residents and more together. More than 2.5 million people participated in the first National Night Out. Now more than 38 million participate annually.