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in tonight's "whatever happened to" segment, benjamin hall tells us why many there fear a repeat of this disaster. >> reporter: it was a fire shock to the nation. britain's worst residential fire since world war ii. now, u.s. firms are being blamed. grenfeld tower in the heart of an impoverished neighborhood alongside one of the richest parts of london was engulfed in flames leaving 72 dead. today, on the second anniversary, doves were released for each of the victims, memorials and vigils were held and emotions gave way to anger. >> what kind of justice do we have? what kind of a justice do we have to kill people and still have no solution for it? no. come on. >> it was newell added cladding on the exterior that helped the fire spread so quickly. the stay-put policy and the lack of adequate fire exits have been blamed for the tragedy.