SeanAhern suggests this one, which IotD featured at least once back in the day, but it's been a while. Naked protest has always been an IotD feature so why not. It's PETA here, in a stunt they do rather often actually - if you scout for IotD shots like I do, I see em all the time, but if you don't, it's new to you.
The
full story in this case is an interview with the lass above, in which she notes she's done this over 50 times.
"That's why we do it: to get media attention for PETA's causes. I didn't like standing outside naked in 30-degree weather -- it's absolutely crazy! But we did it for the animals."