Following the attacks against the Paris offices of the satirical magazine Charlie Hebdo in January 2015 and the subsequent acts of political violence in Paris the following November, a number of memes spread swiftly across social media. Most notable of these were proclamations of "Je suis Charlie," "Je suis Paris," "Je suis en terrasse," and tricolorizing one's Facebook profile page. Although there are various ways by which this phenomenon might be explained, this article argues that, at least for some people, they seem to have operated as key mechanisms by which individuals/society sought to reestablish what Tillich calls "the courage to be," and which in more contemporary terminology might be labeled a sense of ontological security-the ability to go on in the face of what would otherwise be debilitating anxieties of existential dread. The article argues the memes did this through a number of mechanisms. These included establishing a sense of vicarious identification with the victims; embracing increased levels of danger and seeking to confront the question of mortality head on; reasserting a sense of community and home via the reinstantiation of everyday routines now ascribed with enhanced political and existential significance; and reaffirming a new civilizationally inflected self-narrative.KEY WORDS: ontological security and anxiety, vicarious identity, civilizational politics, Paris attacks, social media and memes During the evening of November 13, 2015, terror came to the streets of Paris, as terrorists affiliated with Islamic State of Iraq and Syria (ISIS) targeted cafes, restaurants, the national stadium, and the Bataclan theatre. The shootings and suicide bombings left 130 dead and a further 368 injured. The attacks in November followed an earlier attack in Paris in January, that killed 17, but which is most remembered for the targeting of the offices of the satirical magazine, Charlie Hebdo, where 12 people were killed. Both these attacks resulted in a number of intriguing and "apparently" rather spontaneous-as opposed to (officially) orchestrated-responses across civil society, within Paris, France and even beyond. These took the form of a number of memes that spread swiftly across social media depicting what might be viewed as everyday acts of defiance against the attackers and solidarity with the victims. Following the attack on the offices of Charlie Hebdo, the slogan, "Je suis Charlie" was popularized. Following the wider set of attacks later in November, a similar meme emerged with widespread adoption of the slogan, "Je suis Paris." However, other memes also emerged in this context. One included updating personal profile pictures on Facebook via overlaying a semitranslucent French 243 0162-895X