One of my favorite Japanese sayings is "Zen wa isoge," or "Make haste to do what is right." Such a philosophy is particularly true insofar as crime prevention is concerned — if you move too slowly, or not at all, terrible things can happen.

This was certainly the case in the deadly knife attack at a care facility for people with disabilities in Sagamihara, Kanagawa Prefecture, on July 26.

The attack on the Tsukui Yamayuri En care home left 19 dead and 26 injured. Satoshi Uematsu, a 26-year-old former employee of the facility, allegedly sliced the residents' necks as they slept, stabbing some in the chest or slashing their throats, according to investigative sources.