This Toronto COVID-19 map fits with the interpretation that it's not so much about the people who won't social distance as it is the people who *can't*.

There's pretty decent overlap here:

https://www.thestar.com/news/gta/2020/04/07/whos-still-crowding-into-ttc-buses-amid-the-pandemic-evidence-suggests-many-are-torontos-working-poor.html

There's even better overlap here:

This is the latest census data on the percentage of workers employed in manufacturing, left, and transportation, right.