Former first lady Michelle Obama offered a message of support to teen climate crisis activist Greta Thunberg after the 16-year-old was mocked on Twitter by President Trump: "Ignore the doubters and know that millions of people are cheering you on."

Former first lady Michelle Obama offered a message of support to teen climate crisis activist Greta Thunberg after the 16-year-old was mocked on Twitter by President Trump: "Ignore the doubters and know that millions of people are cheering you on." https://t.co/6MB5YZl2Ev

— CNN (@CNN) December 13, 2019