text:  All week, the two parks set aside for protesters were notably quiet, even deserted. Milwaukee feels like a bit of a ghost town. Michael Heaney is a political science lecturer at the University of Glasgow in Scotland. He's been researching political conventions for 20 years, and he says this one is notably different than others he's been to, and not just in attendance. Usually the outside of conventions are happy and celebratory, and we're just not seeing that this year. There's a very somber tone.