In New York, it is legal for women to topless in public but in most states exposure of female nipples in a public place is a criminal offense punishable by fines and/or imprisonment.
National Go-Topless Day reminds me of the National no Bra Day. But having no bra is different from this event because women who joined the National go-topless day went on n$k&d in public showing their nipples.
The annual Go-Topless Day was established in 2007 by the sports car journalist called Rael, who founded a religion called the Raelian Movement after he was alledgedly visited by a space alien in a French volcano park.
Just a final word, women showing nipples in public beaches seems to be a common thing in some areas. See photos below.
Sources: Huffingpost, Yahoo news, go-topless.org
Related topic:
No Bra Day-October 13, equates to National Breast Cancer Awareness