We should also face the sober reality that government cannot protect us from all possible harm. No matter how many laws we pass, no matter how many police or federal agents we put on the streets, no matter how routinely we monitor internet communications, a determined individual or group can still cause great harm. We as individuals are responsible for our safety and the safety of our families.
Furthermore, it is the role of civil society rather than government to build a culture of responsible, peaceful, productive individuals. Government cannot mandate morality or instill hope in troubled individuals.