[PeoplesRepublicOfWashington]

...they're too young to understand the "statement" they're making?

Those children are old enough to understand the concept of being sentenced to death by dehydration. Everyone knows thirst. This is not a complex issue. In fact, you'll find that young children easily understand abortion, too--it's murder. Only if brainwashed by narcissistic members of the Culture of Death into believing that it's okay to kill out of hedonistic convenience can anyone of any age support murder.

[TexKat]

Those children are old enough to understand the concept of being sentenced to death by dehydration. Everyone knows thirst. This is not a complex issue

So they should be old enough to understand that there was no possible way that they would have actually been able to give Terri water.