Links
[1] https://m.sfgate.com/technology/businessinsider/article/People-are-pooping-more-than-ever-on-the-streets-13778680.php?fbclid=IwAR387N5CDx9mnzElI6JUILM4Dqk8gp_WpABBKppM4x4s_u3NcePGgdDuFqg
[2] http://rethinkpot.org/tags/san-francisco
[3] http://rethinkpot.org/tags/california
[4] http://rethinkpot.org/tags/feces
[5] http://rethinkpot.org/sites/default/files/humanfecessanfranciscochart.jpg