Outside the mainstream, too, reaction was slow. The 1848 Young Ireland rebellion under Thomas Davis, though occurring at the start of the Famine, was hardly impacted upon "by" the Famine, as much as by the clash between the "constitutional" nationalism and Catholicism of O'Connell and the pluralist republicanism of Davis. Another rebellion would not occur again until the 1860s under the Fenians/Irish Republican Brotherhood. Historians have speculated that, such was the economic and social impact on Ireland, the nation was numbed into inaction for decades afterwards; in other words, that politics mattered less to people than survival after the traumatic experiences of the late 1840s and early 1850s.