Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Worst bookcase ever

In the past year I have gotten the entire Dolce collection and loved every piece of it until I got this bookcase. Basically the bookcase doesnt stay together. At first there were just huge gaps between the shelves and side panels. Although it bothered me I decided to keep the bookcase anyway. Then about 4 weeks later the side panel cracked in half and the whole thing collapsed. This bookcase is now worthless.