The authorities don't always listen. Women may be afraid to speak up. Around the globe, apps are giving them a place to document harassment on the streets.
People across the U.S. wrote NPR with their stories of street harassment, and from Alaska to New York, there were a whole lotta "Hey baby"s and "Hi beautiful"s.
Activists outfitted a subway seat with a nude male torso with prominent genitalia. They videotaped men's offended reactions, and hope to make them more sensitive to the many women who are accosted.
Actress Shoshana Roberts says she has received several violent threats because of her role in a widely watched anti-street harassment PSA. Still, she says, she doesn't regret raising the issue.