Because the traditional definition of atheism existed for centuries, the existence of outspoken and dogmatic atheists (see: [[New Atheism]] and [[Atheist activist]]) and because atheism [[Definition of atheism#Advocacy of a broader definition of atheism: 19th century and contemporary efforts|lacks proof and evidence that it is true]], atheists are often accused of being [[dogma]]tic. | Because the traditional definition of atheism existed for centuries, the existence of outspoken and dogmatic atheists (see: [[New Atheism]] and [[Atheist activist]]) and because atheism [[Definition of atheism#Advocacy of a broader definition of atheism: 19th century and contemporary efforts|lacks proof and evidence that it is true]], atheists are often accused of being [[dogma]]tic. |