It's not ideal, but I grew up in an era where dog excrement was all over pavements (or gutters, if highly refined owners were involved) all the time, and human excrement's no worse. I saw a guy masturbating in the street one day last year in Stockbridge. He didn't make any effort to hide what he was doing. There's low-life/mental health issues everywhere.
Quite sad really. We let a lot of people down with a lack of 'care in the community'.