Updated at 4:10 p.m to identify the female protester who led the song.

Protesters supporting WikiLeaks suspect Bradley Manning managed to infiltrate a private fundraiser for President Barack Obama on Thursday morning in San Francisco, interrupting his remarks with a song.

As Obama was speaking at the $5,000-a-plate breakfast fundraiser, California activist Naomi Pitcairn (above), sitting at one of the tables, began humming and singing a modified version of the song “Where’s Our Change?”, decrying Manning’s treatment in prison. Pitcairn removed her blazer and shirt to reveal a T-shirt with a p...