In 2020, Pape published the results of his analysis of the impact of the deployment of US Department of Homeland Security agents on political violence in Portland and conducted research studies of the demographic profile of right wing extremists in the US from 2015-2020. In 2021, Pape published the first systematic study of the demographic profile and political geography of individuals arrested for assaulting the US Capitol on January 6, 2021, which received significant attention in the media in the U.S. and internationally.