Lyric discussion by dbn429 

The lyrical "links" to 9/11 are coerced, at best. You have to isolate vague lines, removing all context, to make them fit this interpretation.

One day they're here, next day they're gone?

Cherry-picking lyrics (selecting those that fit your opinion and discarding the rest) is a disservice to the artist and his original meaning. Look at the broader context. The song is about the desperation that rises out of lost or unrequited love. That desperation can rapidly lead to dire consequences.

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