Grateful for all the good wishes.
As for avoiding the situation, I didn't mean to go to it; it came to me. I had traversed that block hundreds of times in 28 years of living there before, with no trouble. Suckrates (my sympathy for your own mess in Queens back when) seems right on both points -- crime is random, especially in dense urban environs, so what to do short of staying home?
The hunky bodyguard suggestion does have merit.
Of course if I ever disappear again, lookin's fear illustrated above should be seen into. Seek for me in some dungeon of Southeastern Baptist Theological Seminary, as MsGuy has warned me of, more than once.