A popular AI-driven chatbot in South Korea with the persona of a 20-year-old female student was taken down this week after it was accused of bigotry towards sexual minorities, the #MeToo movement and the disabled. Lee Luda, developed by Seoul-based start-up Scatter Lab to operate within Facebook Messenger, became an instant sensation for her spontaneous and natural reactions, attracting more than 750,000 users after its launch late last month. Luda’s AI algorithms learned from data collected from 10 billion conversations on Kakao Talk, the country’s top messenger app.