From Wikipedia, the free encyclopedia

Criticism of religion is criticism of the ideas, validity, or the practice of religion, including its political and social implications.
 
Historical records of criticism of religion goes back to at least 5th century BCE in ancient Greece, with Diagoras "the Atheist" of Melos. In ancient Rome, an early known example is Lucretius' De Rerum Natura from the 1st century BCE.

Every exclusive religion on Earth that promotes exclusive truth claims necessarily denigrates the truth claims of other religions. Critics of religion in general often regard religion as outdated, harmful to the individual, harmful to society, an impediment to the progress of science, a source of immoral acts or customs and a political tool for social control.

History of criticism of religion