Most of all, of course, there are tourists. They stroll, they dawdle, they pose for photographs. As well they should. That's what they're here for, and our city is enriched by them, really it is.
But when the Capitol loop is your lunchtime walking track, and you want to round it twice before going back to your desk, well, it's easy to stew and fume at the congestion.
Whenever that happens, I try to step back and remind myself where I am. And if I have a phone in hand (as I did one day last week), I become one of the picture-taking multitudes, too.