Washington Post owner Jeff Bezos on Wednesday announced a “significant shift” to the publisher’s opinion page that led David Shipley, the paper’s editorial page editor, to leave the paper. The changes upended precedent and rattled a media company that has already been shaken by years of turmoil and leadership turnover.

The billionaire owner of The Washington Post is directing its opinion section to defend personal liberties and the free market in a shift that prompted the editor of that page to resign

Jeff Bezos is exerting more influence over the content of The Washington Post opinion pages, as he announced that the editorials will now focus on “defense of two pillars: personal liberties and free markets.”