Comment The price of freedom (Score 5, Insightful) 1706
As much as it would be great to be able to prevent horrible events like this, it is important to remember that at some point we have to accept that a certain amount of evil has to be tolerated if we want to live in a free society. A locked down police state would likely not be a state worth living in.
Regardless, I offer my condoleances to the families affected by this horrible attack.