A surprising bullying battleground: Senior centers

Two women talk in front of anti-bullying signs on April 12 at the On Lok 30th Street Senior Center in San Francisco. (AP Photo/Marcio Jose Sanchez)
In this 2017 file photo, Marsha Wetzel sits for a portrait in her room at Glen Saint Andrew Living Community in Niles, Ill. (Chris Sweda/Chicago Tribune via AP)

SAN FRANCISCO — The unwanted were turned away from cafeteria tables. Fistfights broke out at karaoke. Dances became breeding grounds for gossip and cruelty.