Data Review
Review of the Opposition Movements and Groups dataset
Version 1.0, published: Feb. 4, 2026.
Description
The Opposition Movements and Groups (OMG) dataset is a global dataset on large-scale political mobilization campaigns that challenge or preserve the core features of a political regime or a polity’s territorial integrity. The dataset spans the period from 1789 to 2019 and covers 151 countries. The unit of analysis in OMG is the campaign phase. A campaign is defined as a series of temporally contiguous, organized collective actions pursuing a political objective related to regime change, institutional reform, leadership removal or preservation, or territorial autonomy or secession.
Countries
Armenia Azerbaijan Belarus Estonia GDR Georgia Kazakhstan Kyrgyzstan Latvia Lithuania Moldova Other Russia Tajikistan Turkmenistan Ukraine USSR Uzbekistan
Keywords
Social Movements Revolutions Opposition Protests