Yea, my friend had these awhile ago actually.
His looked more like this.
Yes it may be making us violent, but I believe it's do to the fact that fish in aquariums are helpless, they are at the mercy of our expertise and dedication. Basically not to sound weird, but their lives our in our hands. They rely on us to live.
I don't care if the fish store owner wasn't a good guy. Slash his tires, break a window, spray paint the building. Absolutely no need to kill any living creature. The guy looks like a punk to me. It amazes me the things that people could do to other people and animals...uggh...i'll stop my rant for now.