The contribution of professional journalism to democratic citizenship is well-established, but the proliferation of online user-generated news begs the question of whether citizen journalism plays a similar role. Use and trust of both professional and citizen journalism were investigated for their associations with political knowledge and participation. User-generated journalism was negatively related with knowledge of national political figures, but strongly and positively associated with higher levels of online and offline participation; professional news media produced gains in knowledge and offline participation. Trust in user-generated news amplified the link between citizen journalism and online participation.