Tick tock - bang?

Story from across the pond of a young boy (who just happens to be a Muslim) who made a home-made clock and took it to school.  The teachers thought it was a bomb (apparently it ticked) and called the police, who arrested him.  He was later released without charge, so you would think that was the end of that?  Not a bit of it - President Obama, perhaps somewhat unwisely, invited him to the White House, so it all became political.  Sarah Palin - never one to miss a chance - is on record as saying "Right. That's a clock, and I'm the Queen of England".
        PLEEEZE - don't let it be a clock!!