"Which issue is more readily understood by a child? "
Probably the Iraq War issue, since children can see war on the History Channel and other forms of media. Whereas a force-to-be-starved sad tragic case like Terri's is probably new to them. Both certainly involve the deaths of innocents.
"Which one places the child more at risk? "
Which event resulted in the child getting arrested and handcuffed? Apparently, you haven't been paying much attention to current events.
You are being quite disingen. . .
Hell, I'll just say it. You are full of $#!+.