washington michelle obama has backed swedish teen climate crisis activist greta thunberg and urged her to ignore the doubters after she was mocked by us president donald trumpdont let anyone dim your light the former first lady tweeted to 16yearold thunberglike the girls ive met in vietnam and all over the world you have so much to offer us all she saidwithout mentioning president trump michelle added ignore the doubters and know that millions of people are cheering you onthunberg who has inspired protesters worldwide to push for action in combating the climate crisis was named time magazines person of the year this weektrump on thursday tweeted that it was so ridiculous for thunberg to be recognised as person of the yeargreta must work on her anger management problem then go to a good old fashioned movie with a friend chill greta chill trump wrotefollowing trumps tweet thunberg updated her twitter bio to reflect trumps commentsdemocratic presidential frontrunner joe biden who served as barack obamas vice president chastised trump for his comments writing on twitter what kind of president bullies a teenagerat the ongoing un climate summit in madrid thunberg accused rich countries of misleading the world over their response to climate change