I agree it is not the JWs that killed the newborn child but they do justify God's actions in doing so. They condone the belief that children should be killed as a result of their parents' sins. If they agree with the belief and they defend the belief then they can be held accountable for their views.
though the other religions don't get picked on
As for the above comment you made... C'mon now. You really need to come out from under the "only JWs receive persecution" rock you are living under. We are all held accountable for our beliefs, including other religions outside the JW organization. The JWs bash every other religion and person under the sun that is not affiliated with the Watchtower Bible and Tract Society! They can dish it out without any consideration to the feelings of others outside their cult so they should be able to take it ten fold in my opinion.