• A new book on the Kitty Genovese murder casts doubt on the “bystander effect.”

• A Good Samaritan in San Francisco finds himself cuffed, arrested, beaten, and thrown into isolation.

Cops shoot dog in Riviera Beach, Florida.

Feds set out guidelines for banks to do business with marijuana retailers in states where the drug is legal.

• Detroit cops to hit the streets in new cruisers donated by local businesses.

• My Post colleague Sasha Volokh looks at the efficacy of faith-based prison programs.