People can think that's funny, your thoughts do not concern your merits, it's a bunch of block creatures with red bricks near them sorrounding a block-man which is pointing a gun towards it's head. If you think that's funny, that does not make you a bad person (rather a mentally ill one).
That was a sick attempt at humor, but regardless, if somebody thinks that it's funny, they can think that no matter how much it disgusts you that a bunch of computer data on a screen is concievibly funny to them.