Across YouTube, an unsettling trend has emerged: Accounts are publishing disturbing and exploitative videos aimed at and starring children in compromising, predatory, or creepy situations — and racking up millions of views.BuzzFeed News has found a number of videos, many of which appear to originate from eastern Europe, that feature young children, often in revealing clothing, placed in vulnerable scenarios. In many instances, they're restrained with ropes or tape and sometimes crying or in visible distress. In other videos, the children are kidnapped, or made to 'play doctor' with an adult. The videos frequently include gross-out themes like injections, eating...