St Patrick's Day celebrations in Belfast city centre since 1998 have been imagined as providing a common symbol and space to imagine cross-community identities. Celebrations represent an attempt to constitute a social act of forgetting, to abandon a past where public commemorations perpetuated sectarian division. This article charts how the celebrations were contentious as competing groups claimed ownership over its performance. The contested status of the celebrations were largely the outgrowth of political legislation which, rather than facilitating cross-community alliances and identities, preserves the outright difference and absolute cultures enshrined in the notion of 'nationalist' and 'unionist' identities. Moreover, if the performance of memory has helped maintain discrete unionist and nationalist identities, and an abandoning of a past blighted by sectarian conflict is required to create a new, harmonious society, this legislation rendered the role of memory and forgetting ambiguous by stressing both as contributors to reconciliation.