Even if - and I stress IF - it's a rogue JW, or even a group of them, it doesn't represent JWs, or even the religion, as a whole.
The WTS/JWs teach that they are separate from the world, and that their god Jehovah alone will exact his vengeance on wicked mankind. JWs just go about their preaching and living as unconnected to the 'world' as possible.
Trying to lay some kind of culpability on the WTS or JWs as a whole for what some dumbasses who happen to go to the KH did is like blaming all of Islam for what ISIS does, and all of Christianity for abortion center bombings.