First of all, from one paper-cutter to another, sir, I find this piece quite delightful. After finding out the message intended behind this piece, I will further add that it's a very noble cause. On both accounts, well done!
What I like about this bilaterally symmetrical piece is the attention to detail, which has always been a hallmark in your works to date. I am not always a patient man. Your ability to come up with such a myriad of non-repeating decorative patterns, art-nouveau style, to come together to form a larger motif has always had me very impressed. And in this case the left-right symmetry certainly works out very well for this piece. Besides, the execution to create this piece is precise and exact. It's a completed project to be proud of.
If there is a critique that I might give for this piece, it has something to do with the overall unity of the decorative patterns that fill the image. Surely, there is a large number of non-repeating motifs coming together for this piece, but there's no theme and no unity between them. It would almost seem as if they have been randomly put together. I have a hunch that if the decorative motifs can be organised around a theme (whether symbolic or just based on shapes), it can probably enhance this already very strong piece. For example, the finger-like, projectile motives that are used on some parts of the circle may take the viewers' attention away from the arrowhead in the centre. While the ray-line motifs near the base of the arrow actually help to draw attention to the arrowhead. With a little arrangement, perhaps we can bend the power of seeming chaos to work for us and further draw and focus the viewer's attention to specific parts of the whole image.
But that's just a suggestion, one that not even I know for sure will work. In the meantime, I have to agree with the rest of the Justice League: Kudos, you've done a really good job here.