This blog by an immunologist was a really handy read:
https://www.erinbromage.com/post/the-risks-know-them-avoid-them
It echoes a lot of the sentiments that have been hopping around. That is, the virus is containable but there's a few really bad activities that are time bombs: indoor large gatherings, church, bars, meat plants, and anywhere where people are singing. In municipalities where the virus is contained, new flare-ups are being traced almost exclusively to these places.
Talking (and/or singing -- singing is worse) is the biggest culprit of respiratory spread. Interestingly, despite the fear over elevators, there hasn't been any evidence at all that they're a conduit. That's because you mostly mind your own business on the elevator. Rather, outbreaks at work are being traced back to floors (i.e. the 11th floor of Joe Schmo and Associates) where people socialize and talk to each other.
Bars are major issue. I mean, the world won't end if kids miss a year of school, and I'm sorry to say if you're religious, but honestly,
you're not going to die if you put off church. Bars are largely personal businesses that can't afford a year on the shelf. At the same time, they're absolute petri dishes, so I'm not sure what should be done about them.