Oh no, you don't sound callous, you sound sick and disturbed. Go tell the families of the journalists that you are glad they are dead. Go ahead. I'll wait.
Hell, I wouldn't tell the family of Osama bin Laden I'm glad he's dead. But I'll still be glad when he's dead.
Taunting dead people's families is a little outré, isn't it? What made you think of it?