mRNA can only be used to create a protein. If you want to kill somebody, there are vastly easier and cheaper ways to do so.
What exactly do you think you can do with mRNA that you can’t do with a bullet?
“What exactly do you think you can do with mRNA that you can’t do with a bullet?”
I’m not sure why you’re asking me this.
Your question is really a broad question and an answer is biological warfare, whether using weaponized natural pathogens or genetically engineered bio weapons, can kill more than guns from a distance without needing to be in proximity of the victims.
You might as well ask what do you think you can do with a bomb that you can’t do with bullets.