I went for a stroll near my hotel. I walked by a homeless man who was transferring liquid of some sort into a bottle. Normally I don't stress about homeless people, but I got a bad feeling from this guy.

He looked young (late 20's/early 30's) a couple of seconds after I asked passed him, I heard him start walking after me. A few seconds later I glanced again and he had closed some distance. I knew he had the advantage of an attack from behind, and he had a big glass bottle. 

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