Where Is The Proof FBI?

If the charge of planning to kill a peace officer is true, these folks deserve to go to prison. But I would like to know if the weapons that were taken are illegal? And what laws says a private citizen can't teach themselves how to build a bomb? There is going to be more to this story than what is being told right now. This may be a distraction, or a set up in order  to arrest law abiding citizens in the future. Time will tell.