style="overflow: hidden; color: #000000; background-color: #ffffff; text-align: left; text-decoration: none; border: medium none;">In Philadelphia, where I grew up in the 1980s, there was a little-used underground tunnel between subway stations. Very suddenly, when I was 11 or 12, the tunnel became a cardboard city for homeless men. I remember the fluorescent lighting and the blue walls, the men on pallets, their belongings in garbage bags. I remember the smell of unwashed bodies and alcohol seeping through pores. My mother and I avoided this passage but if the weather was inclement, or we were in a great hurry ... Keep your head down, and walk fast, she would say. We’d scurry through, my mother shaking her head in disbelief at this new iteration of human suffering. Why didn’t anyone do anything?