The master's thesis deals with the citizen photojournalism and the citizen videojournalism in the Czech media landscape. It focuses on the frequency of the amateur photographs and videos published on the selected news web sites and also on the gatekeeping process. This master's thesis also reflects the editor's opinions on the citizen photojournalism and the citizen videojournalism. The citizen journalism is usually viewed from the perspective of the citizen journalists, but this master's thesis brings the view from the second side, from the media professionals. The thesis uses the combination of the quantitative and qualitative methods. Firstly, there was conducted the quantitative content analysis. Secondly, there were interviewed the media professionals. The conclusions of the master's thesis indicate that the citizen photojournalism and the citizen videojournalism is rarely used on the Czech web sites. The media professionals evaluate this phenomenon positively, find its contributions to the news flow but only under the certain conditions. On the other hand, they do not find the citizen photojournalism and videojournalism absolutely necessary element for the news service.