[[File:International Atheist Day.jpg|300px|thumb|This is an [[International Atheist Day]] poster, featuring [http://www.biblegateway.com/passage/?search=Psalm+14%3A1&version=KJV Psalm 14:1], along with two common [[atheism symbols|symbols of atheism]] : (1) the ''scarlet letter'', which traditionally represented [[adultery]] (2) the [[hammer and sickle]], which is used by many [[atheist state]]s in which the promotion of [[militant atheism]] is a tenet of [[Marxist-Leninist]] ideology. See also: [[April Fool's Day]] ]]
Although the [[secular left]] is known for ridiculing [[religion]] since at least the time of [[French Revolution]] (see: [[Atheism and mockery]]), the secular left is known for its humorlessness when it comes to others mocking of its ideology (See also: [[Atheism and humor]] and [[Atheism and intolerance]]).
In 2017, the atheist [[PZ Myers]], quoting fellow [[leftism|leftist]] Alex Nichols, wrote:
{{Cquote|...the growing popularity of jibes associating outspoken atheists with fedoras, neckbeards, and virginity, led to an exodus of [[liberal]]s and [[leftism|leftists]] from the “atheist” tent. Those who remained for the most part [[Atheism and social/interpersonal intelligence|lacked in social skills and self-awareness]], and the results were disastrous.<ref>[https://freethoughtblogs.com/pharyngula/2017/10/17/poisoning-of-a-movement/ Poisoning of a movement] by PZ Myers</ref>}}
Humor is central to social life and humor can be a societal expression of ridicule/scorn.<ref>[http://blogs.helsinki.fi/humourproject/ The Darkside of humor]</ref> Concerning various [[views on atheists]], research in the American Sociological Review finds that among several groups listed, [[atheists]] are the group that Americans relate least to in terms of their vision of American society and are the group most likely to be mentioned as one that Americans would not want to have marry into their family.