My grandpa used to say that you'll never be the same once you've taken a life... or have seen life get taken away. And I believe him... because I don't think human's are naturally evil. I'm sure that Adolf Hitler fell in love once. And I'm sure that there was a time when he valued life.
But life has a way of changing people.
A sigh is good.
It doesn't necessarily carry a positive or negative undertone. It's just a way of saying that somethings are almost too much to handle...
So here's to life.
Anyway, I like the feel of this piece. The simplicity allowed you to convey the deepest of emotions and touch more than one solid ground. In a way, it reminds me of the way Hemmingway would execute some of his thoughts on paper.
The transition, I think, needs some work, but it doesn't ultimately hinder your piece from touching people... especially with the point of realization involved.
maybe try, they loosed a sigh? idk. there's one too many right there.
For the ones who could not come.
too many syllables there too- how about for those who could not come?
With a click and a flash They took one more everlasting peep.
you need another syllable in the line "with a..." something like, "with a click and with a flash". The line below it is too long, and I don't understand why you used the word "peep" other than for rhyming reasons. It doesn't work.
And then a camera drops. that should be past tense, "dropped" because the rest of the poem is in the past tense.
The last one needs some rhythmic work, but it's late and I can't think of any suggestions. just read it. you'll sense the too-long and too-short lines.
As for content, this is a good poem, if not a little trite. And there's a better way of conveying emotion rather than just someone weeping. Having your friends die is traumatic, I'm sure you can think of spicier words than those. but I think I'm being overly critical. it's not a bad poem.