Why underwear brand Thinx had to adjust its TV ad before some networks accepted it

As feminine care brands get more vocal and creative in their marketing, they are coming under more intense scrutiny by TV networks and digital platforms. One recent example is Thinx, the New York-based maker of underwear that women can wear while menstruating. The brand recently debuted its first TV campaign, which envisioned a world in which men, as well as women, get periods. The lengthy spot shows imagery such as a blood stain on a bed, and a tampon string hanging out of a man's underwear. Ab