Only national repentance will save us now. OK, let's look at that. They had access to pipes, fuses, household cleaning items, etc. Maybe these should not be available to the public, either. Maybe they would have killed fewer people.
Children have access to anything they want bad enough.
This will not change in our lifetime. Guns, drugs, knives, matches, scissors, clubs, rocks, etc., can all be dangerous if the intent is there. It is through teaching and parenting that we educate our children and instill in them the difference between right and wrong. The problem is in the mentality of the person who masterminds the plan to hurt or kill someone, not the weapon they choose. We have to reach the heart of these kids to find their real problems.