Are the machines already fighting back? A jaw-dropping video from China has sparked fresh fears about the rise of humanoid robots after a machine wearing a clown wig kicked a young boy in the stomach during a public demonstration. The incident unfolded at a tourist attraction in Xinjiang, where dozens of spectators had gathered to watch a robotics showcase of martial arts moves. A wig-wearing humanoid went rogue and floored a child with gut kick during a robotics showcase of martial arts moves Jam Press But what began as a fun display of futuristic technology quickly turned into a scene…