Suspension is a punishment only in that it removes them from the environment so they cannot harm others. The legal system will need to be involved. All of that said, these kids seem to be quite young. I doubt much will actually happen to them legally - and that's probably fine. As long as the kids learn their lesson and never do it again. I hope this also is used as a teaching moment for everyone that we now need to contend with images that are created not only of adults but of children.