Protest
From dKosopedia
A protest is a gathering of people for the purpose of advocating a political or social issue in a public setting.
Protests are an exercise in freedom of speech, the right to peacably assemble, and the right to petition for a redress of grievances, all guaranteed by the Bill of Rights in the United States Constitution.
Protests can be of any size and on issues spanning the political spectrum. Among the largest and most prominent protests from the Vietnam War to the present have been antiwar or peace protests, with several large protests against the current Iraq War. Antiglobalization protests in 1999 in Seattle are another prominent example of a large, successful protest which garnered much media coverage and helped turn public opinion on the issue of trade policy.