The following quotes are taken from evilbible.com:
"Micah Kills A Whole Town - "Then, with Micah's idols and his priest, the men of Dan came to the town of Laish, whose people were peaceful and secure. They attacked and killed all the people and burned the town to the ground. There was no one to rescue the residents of the town, for they lived a great distance from Sidon and had no allies nearby. This happened in the valley near Beth-rehob. Then the people of the tribe of Dan rebuilt the town and lived there. They renamed the town Dan after their ancestor, Israel's son, but it had originally been called Laish. (Judges 18:27-29 NLT) (Note that God approves of this slaughter in verse 6.)"