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. But what began as a fun display of futuristic technology quickly turned into a scene straight out of a sci-fi