Senior citizens from Mattapan with American flags and loud voices of support gathered in front of the branch library on Blue Hill Avenue on Sept. 5 to cheer on new police officers as they ran from Hyde Park to Police Headquarters in Roxbury – a tradition for every graduating class from the Boston Police Academy. Seth Daniel photo

One hundred newly sworn-in Boston Police officers began their assignments in districts across the city last Monday (Sept. 8) including at Area C-11 and Area B-3, the two largest districts covering Dorchester and Mattapan. Police commanders say the reinforcements are a welcome addition to a street force that has been slimmed down by retirements and promotions in recent months.

The bulking up coincides with Mayor Wu’s promise that a majority of the new officers wo

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