I used to work at Boston Latin Academy in Dorchester. The building took up an entire city block. In my 3 years at that job there was a shooting on each of the 4 cross streets. Couldn't tell you how many times we went into lockdown.
I used to live in Roxbury. I once walked out of my apartment and found that I was behind police tape. I literally step onto my front porch and it's just me and a cop standing behind the yellow tape and a group of onlookers on the other side.
Couldn't get out of that area fast enough.