The Sunrise studios in Sydney have been swamped by protesters furious over the program's segment on Aboriginal adoption earlier this week.

Videos on social media showed demonstrators holding placards and banging on the studio's glass windows while people chanted "Leave the kids alone!" and "Always was, always will be Aboriginal land".

Sunrise lowered the blinds on its Martin Place windows to prevent the protesters being shown on national TV. The chanting could not be heard from within the soundproof studios.

A Seven spokeswoman said a generic backdrop of Sydney's Martin Place was used on Friday morning to avoid any offensive signs being shown on national TV.