The Katiba des Narvalos (from Arabic "Katiba"="battalion" and Romani or French slang "Narvalo"="mad") is non-partisan collective constituted from citizens from all venues of life, dedicated to fighting jihadism on social networks and more generally on the Internet. Their tactics comprise parody, as to discredit jihadist propaganda; surveying and reporting offending accounts; and infiltrating cyber-jihadist networks as to prevent terrorist attacks.