I have absolutely no scientific basis for this, so take my take with a giant grain of salt, but I would be afraid it desensitizes people to violence or just traumatizes them, especially if they're kids. There's a reason you don't show the new Evil Dead movie with a zombie using a cheese grates people's eyes to children.

People, that means the kids parents, are not voting for horrific zombie enabling politicians, but it’s in their hands to stop supporting the war-hawks.