Well, I think this ID, which I got from BugGuide.Net, is probably correct.
I posted a link to this picture
of one of the jillions of
these black-and-orange bugs that have invested my tomato garden and are now
still crawling all over the yard and up the walls of the house.
Verdict: A "Red Bug", also known as a "Largus Bug". Largus succintus.
Apparently just a "nuisance pest", not known to do damage.