Hardware is easy to protect: lock it in a room, chain it to a desk, or buy a spare. Information poses more of a problem. It can exist in more than one place; be transported halfway across the planet in seconds; and be stolen without your knowledge.
I was in one a couple of days ago where they saw me in the car and they started banging, banging on my car. I 'm not sure these are even Hillary Clinton, Barack Obama supporters. I think these people are, you know, kind of like professional protesters more.