According to Harvard law professor Alexandra Natapoff, the use of informants has the potential to undermine core values in our criminal-justice system. Natapoff, the author of "Snitching," argues that by using informants, law enforcement transforms guilt into a negotiable commodity—one that can produce tragedies.See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.