And lest you think I’m just expressing paranoia, we did see a homeless guy injecting something (it was more likely heroin than insulin ) into the neck of a homeless woman on the sidewalk as we went by, and we did get glares and yells as we walked through the more off-the-path areas. On the whole walk, I saw only two other Caucasians (and I’m including Jae and Lance, the two people I was walking with!)