Mark Zuckerberg has taken the stand on the first day of this historic antitrust trial.

He's trying to defend his company against allegations it illegally monopolised the social media market.

The body taking him to court is the Federal Trade Commission - and its former Chair spoke to Radio National Breakfast.

Meanwhile, economists have criticised new housing policies from both the government and the opposition, warning they risk pushing already unaffordable house prices even higher.

The Coalition's plan would allow first home buyers to deduct the interest on mortgage payments from taxable income, for five years.

And while the Greens have dismissed the government's latest announcements as quote, "tinkering around the edges" — will the party stand in the way of passing them?

Lastly, as Australia heads into week three of the election campaign, advocates for people with disabilities say their community has been largely left behind by the major parties.

Recap the morning's news, politics and global affairs with the Breakfast Wrap