Reducing this to zero should be our #1 goal. As technological advancement keeps allowing one bad person to take out more and more people, for lower cost. If technology keeps advancing, that ratio could eventually become 1:1B+, for a few thousand dollars.

In my opnion, this is the greatest race we are in, if we are to avoid our own Great Filter event. Using violence as a problem solving tool is simply not compatible with a truly technologically advanced species.