We learn at an early age that there are fences in our everyday life that shouldn't be crossed. Then when we disobey, and end up cutting ourseleves, we learn that it is sharp and dangerous.
Fertilizer bombs are a way of life for the loggers in Washington and elsewhere.
For economic reasons, they use them to remove tree stumps as they clear an area. Just because some people know how to make fertilizer bombs, didn't give Timothy McVey the right to decide to destroy a nursery full of children in Oklahoma City with one. In Varner, Arkansas, Christina Marie Riggs was having trouble in her own life. She crossed a fence that ultimately resulted in her murdering her two young children. We Americans as a people, hang on to 'the right to bear arms'.