I don't know about ritual mourning. But I am glad that one of my neighbours, a fellow who actually ran in that marathon yesterday, is still among the living and intact. Yes, that damns me for selfishness.

... or just the tweet?

If you read the tweet only, please read the article; if you read the article, I think you misunderstood me. I very specifically said, "If you were there, or you live in Boston, or you know people who were, or do, go ahead and share your pain; it's yours and you have every right. But the rest of us should shut the fuck up [...]"

So I don't think you're being selfish at all in feeling or in expressing a personal sense of relief.

I did read the article.

Then I'm sorry, but I don't know why you took offence.