There are many levels of response and analysis.
To those who were killed, who were injured, and to their friends and families, the response is entirely human. These people are the innocent victims of violence which they did not provoke.
To those who were participants, spectators, volunteers and organizers in the marathon, the response is equally human. These were people who were caught up in an episode of violence that may be equally traumatic, but for which the wounds are not visible.
To the helpers: the police, the firefighters, the EMTs, the doctors, the nurses and the others who responded to the violence, the response is gratitude.
But then we move into the more critical reactions.
To the investigators, there is impatience for explanation. The desire to place blame and to punish.
To the security agencies there is the question of what was done to prevent this, what more could have been done, and would that more have neen enough to prevent it?
To the political authorities, there is the question of what provocation was offered to the individual, foreign or domestic, who peretrated this?
The existence of one response does not foreclose the others. I can be sympathetic to victims, grateful to responders, and critical of government all in the same breath. This isn't "taking advantage of tragedy for political reasons," this is being engaged in the world.
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--James