From the Times' Mike Davis:

After her 7-year-old daughter, Megan, was sexually assaulted and murdered by a neighbor, Maureen Kanka made it her mission that no other family would experience a similar tragedy.

Working with local legislators, Kanka oversaw the creation of Megan’s Law in 1994. It required sex offenders to register with local law enforcement agencies so residents could be notified of a sex offender’s intention to move into their community.

You can read the full story here.