Some other sources such as Snopes say the reports of babies being specifically beheaded is unverified, but they do confirm that babies have been killed and adults have been beheaded. So if we want to take that on face value, we’re still back to the pointless and absurd discussion about how many civilians of any age can be killed, and in what manner, before such killings go from being a justifiable to unjustifiable response to Israeli oppression.