Mandating mRNA shots for children is unethical.  

There are harmful, even fatal, side effects. https://nomoresilence.world/

There is no comparison between the mRNA shots and traditional vaccines that prevent small pox, polio, measles and other severe illnesses.  Children are not at risk from COVID, nor have they been shown to be a significant source of COVID spread in the community.    

MRNA shots are in fact much more risky for healthy children than COVID.  A recent study found that healthy boys between the ages of 12 and 15 were four to six times more likely to be diagnosed with vaccine-related myocarditis than to be hospitalized with COVID

https://www.medrxiv.org/content/10.1101/2021.08.30.21262866v1