adamgreer - Appropriate? I think so. Why not?
BobbyBubby - Mandatory response? Not so much.
Who wouldn't feel sympathetic to anyone dealing with a tragedy? But tragedies, such as this one, are often never fully healed. I, personally, don't feel a need to re-express my sympathies to the family. But I am glad I did express them earlier, after the news broke out. To the family and friends, it's a comfort to have that support from people -- even if they are "strangers."
"The Spectacle has, indeed, an emotional attraction of its own, but, of all the parts, it is the least artistic, and connected least with the art of poetry. For the power of Tragedy, we may be sure, is felt even apart from representation and actors. Besides, the production of spectacular effects depends more on the art of the stage machinist than on that of the poet."
--Aristotle