CHICAGO:  A Muslim teen was led out of a Texas school in handcuffs after bringing a homemade digital clock to class his teachers thought was a bomb, prompting accusations of Islamophobia and an online backlash on Wednesday. A photo of Ahmed Mohamed, 14, standing in handcuffs while wearing a T-shirt with the US space agency NASA’s logo was retweeted thousands of times in a matter of hours. Mohamed told The Dallas Morning News that he was just trying to impress his teachers when he brought the clock to MacArthur High school on Monday. “My hobby is to invent stuff,” he said in a video posted on the paper’s website that was filmed in his electronics-filled bedroom. “I made a clock. It was really easy. I wanted to show something small at first... they took it wrong so I was arrested for a hoax bomb.”