Continuing with our insistence that FEAR IS BACK, today’s Transom has a downright disturbing item about Brooklyn artist Chris Hackett […], who is constructing a fully-functional suitcase bomb. The piece is courtesy of the Madagascar Institute, a radical art organization which is organizing an exhibition to be shown at either Cooper Union or South Street Seaport the week of September 11. Here’s to the power of perfect timing:[Hackett] said the strength of the bomb would be equivalent to “about four pounds of TNT. It doesn’t sound like much,