Below, you'll see any text that was highlighted with comments from the reviewer.
I love the first line - "I will never forget the sound of a gunshot" - because it effectively holds the balance between being interesting enough to hook the reader, but still not giving too much away all at once.
I'm left feeling sad and touched by the protagonist's obvious pain. The fact that you, as a writer, were able to transfer this emotion of sadness from the character to the reader shows a lot of ability! Well done for conveying the theme of loss in a very mature and effective way.
I wonder what your inspiration was for this piece? Also, how did you come up with the motif of time? (I love it!!)
(Just a note that these comments are my personal opinion only. As the writer, you have full creative control over your piece, and you get to decide to what extent you implement my feedback). Overall, I was thoroughly impressed by the emotional and creative maturity of this piece! You've managed to take a very dramatic sequence of events, and present them in a beautifully understated, effective way. To make this piece even better, I would consider tightening your third paragraph - rather than simply saying "two groups of people", perhaps you could make this moment more vivid by describing the people (what were they wearing? What are they saying to each other? What can the protagonist hear, smell, see? What makes it obvious that the two groups are opposed to each other?) Other than that, congratulations on a very enjoyable read! I look forward to reading your future work :)