Potent message, JCosmos, especially in light of the news of the past 24 hours.

The rhyme scheme of interlocking tercets a-b-a, b-c-b, c-d-c, d makes this a variation on the theme. Most of the examples I've seen end in a couplet, which would be d-d in this poem, but I also got the idea that the form is not as firm as some other poems are.

You've chosen to use 10 syllables in each line, instead of eleven as the examples I've seen, but again I get the impression that it is the poet's choice. Ergo, the syllabic and rhyme variations of your poem fit quite well with the theme of your poem.

The concern over the impact of poorly used lethal weapons, mixed with the most lethal weapon of the human heart, that can't be regulated by the laws of the land, creates an environment of living with too much grief.

Your concerns are well spoken and strongly heard by this reader.