Donald Trump and Mayor Rahm Emanuel are butting heads over a big sign at the top of the city`s Trump Tower. Workers have already put up the first four letters of the Trump sign. The mayor says it`s tacky and taste and it`s a blight on the city`s skyline. Trump insists people will grow to love it, just as they did with the Hollywood sign. Just last year, city zoning officials gave the okay for the Trump sign. Emanuel says he`s looking into what the city can do to get it taken down.