Drs Producoes/E+/Getty Images Child stars have been a hallmark of the entertainment industry since the advent of the entertainment industry, from the Mozart children dazzling the courts of Europe as traveling musicians to Hollywood icons like Judy Garland and Brooke Shields. And with the advent of social media, a new kind of child star has emerged: the child influencer. From unboxing videos to family vlogs, children can and have earned millions from channels and accounts they contribute to. But as with their cultural predecessors, child influencers often report exploitation and abuse in their rise to fame. And all too often,...