La Manif pour tous

The Syndicat de la famille ('Union for the Family'), better known under its original name of La Manif pour tous (LMPT), is a nonprofit organization and political movement based in France which is responsible for most of the anti-gender and anti-LGBTQ demonstrations and actions that took place between 2012 and 2013, in opposition to the legalization of same-sex marriage in France (better known as mariage pour tous—"marriage for all"), as well as against the adoption of children by same-sex couples in France.

Since the law was enacted in May 2013, the organization's demands have remained the same: opposition to marriage and adoption by same-sex couples, to assisted reproductive technology in the absence of a father for the child, and to all forms of gestational surrogacy (including for male-female couples). The movement supports father-mother-child filiation and opposes what they refer to as "gender ideology".

Described by Le Monde as bringing together numerous organizations, of which the main ones are almost all religious and mainly linked to Roman Catholicism, and supported in its calls for public demonstrations by many members of the right wing and the far-right in France, the group identified itself as apolitical and non-denominational before it became a political party itself in April 2015. Internal divisions resulted in the successive departures of its founders Béatrice Bourges, Frigide Barjot, and Xavier Bongibault.