"leading demonstration" is correct and usable in written English.
You can use it to describe the action of a person or group of people showing how to do something, or how to use something. For example, "The athletes provided a leading demonstration of the correct technique for performing the long jump."
He was charged with "disobeying the ruler", "inciting sectarian strife", and encouraging and leading demonstrations.
The Rev. Al Sharpton, who has been leading demonstrations against the Police Department, and Representative Charles B. Rangel of Harlem, the dean of New York's Congressional delegation, are to attend the session with Deputy Attorney General Eric H. Holder, the second-ranking official in the Justice Department.
Shalit's father, Noam, has become a well-known public figure through a campaign to win his son's freedom, leading demonstrations and sleeping in a tent outside Netanyahu's residence.
The Rev. Al Sharpton, who has been leading demonstrations against the police officers, said outside the courthouse, "I think that it is extremely interesting that we are hearing a charge based on self-defense of a robbery that never happened".
Min Ko Naing, a former student leader who was first jailed after the failed 1988 democracy uprisings, was again arrested after leading demonstrations in the summer of 2007 with others of the 88 Students Generation Group.
Mr. Katz was director of the National Committee to Reopen the Rosenberg Case for 42 years, repeatedly leading demonstrations outside the federal courthouse on Foley Square in Manhattan on the anniversary of the couple's execution in Sing Sing's electric chair on June 19 , 1953
But if the bishop bristled at having "outsiders" leading demonstrations in his state, he was no segregationist.
Fania: Angela had been very involved with prison-rights activism at the time, leading demonstrations up and down the state.
He spent his youth in the civil rights movement, leading demonstrations and playing a role with the NAACP.
