A Chinese man has been arrested for child trafficking after a BBC documentary accused him of exploiting children in Malawi for social media fame and financial gain. BBC reporters discovered that Lu Ke filmed children as young as 6 making video greetings, taunting themselves and calling themselves the “Chinese equivalent of the N-word”. Lu paid the children about 50 cents a day, and when they didn’t listen, he pinched or whipped them, one child said. “If I made a mistake and if we did something wrong, he would whip us with a stick and give us detention,” said Bright, a…