The healthcare debate really is getting ugly.
The protesters demanded Feinstein talk to them about healthcare reform.
She wasn't having it, so police lured the seven protesters outside somehow and then locked the doors behind them, said Los Angeles police Sergeant Rich Brunson.
Local, state and national politics
A spokeswoman for the 55- to 87-year-old activists told The Associated Press that they arrived at Feinstein's office around noon and remained in her conference room more than six hours.
Feinstein spokesman Gil Duran said staff had offered the retirees an in-person meeting with the senator during a Los Angeles visit next week but that they demanded to speak with her immediately.
No arrests were made, Brunson said.