shrill_eflags is a Tumblr feed documenting the many uses of the US flag in (non-folk) art, ranging from gallery installations to documentary photography. The archives start in January of this year and @theshrillest (aka Shrill Cosby) has been posting over 60 times each month since then.
It is dazzling to see all the many ways the US flag appears, transformed and situated, in this flood of online imagery. Here is a small sampling.
Portland Flag Association 