Britain 's former Prime Minister Thatcher died in Britain the age of 87 at Monday . London ( CNN ) -- Former British Prime Minister Margaret Thatcher , who died Monday at the age of 87 , helped to shape the course of 20th century history -- but not everyone believes the Iron Lady changed things for the better . Margaret Thatcher 's admirers and detractors were quick to share their reactions to the news on Twitter .
Britain 's former Prime Minister Thatcher died in Britain the age of 87 at Monday . Margaret Thatcher 's admirers and detractors were quick to share their reactions to the news on Twitter .