EVERYONE BEHIND THIS MAN GOT UP AND LEFT.
There are some things that just don't belong in baseball, like crying and steroids. Then there are things that don't belong in baseball, on a t-shirt, or in life — like a Nickleback shirt, for example. There is free speech in this country, and then there's inciting violence by wearing something that will make most rational people fly into an inchoate rage. Not even the ACLU is going to stand up for this shirt.