Controversial Subway Ads, a YouTube Fine and TikTok Teams Up with the NFL | September 5, 2019

eMarketer principal analysts Nicole Perrin and Andrew Lipsman discuss the wave of contentious subway ads: What's allowed? What isn't? Why have startups become obsessed with marketing on public transit? They also talk about YouTube's latest FTC fine, a new partnership between TikTok and the National Football League and more.