Boston December 13, 2023 7:12 am FBI warns of increased risk of violence this holiday season The FBI and Homeland Security warmed on Tuesday of an increased threat for violence in large crowds and religious gatherings. US & World Videos 2:06 Man killed in mobile home park fire in Peabody 2:34 Takeaways from Dateline's special on Karen Read Case 1:58 Teen arrested in beating of disabled Danvers man 0:52 Turtleboy accuses Norfolk County DA of lying and mishandling his investigation 20:15 Karen Read appears on Dateline as high court prepares to hear her appeal