They are now frantically pulling these shirts from the shelves.
So let's get this sorted out. A t-shirt using a bloody "massacre" as a mere "metaphor" for a baseball sweep some 35 years ago is cool.... UNLESS somebody does an ACTUAL massacre in the same city.
But wait....if it was okay before, it should be okay after, because... hello.... it's a METAPHOR.
Get 'em now kids. They are collectors items, and horribly insensitive at cocktail parties.