Appellant Richard Grayned was convicted or his part in a demonstration in front of West Senior High School in Rockford, Illinois. On April 25, 1969, approximately 200 people -- students, their family members, and friends -- gathered next to the school grounds. Appellant, whose brother and twin sisters were attending the school, was part of this group. The demonstrators marched around on a sidewalk about 100 feet from the school building, which was set back from the street. Many carried signs which summarized the grievances: "Black cheerleaders to cheer too"; "Black history with black teachers"; "Equal rights, Negro counselors." Others, without placards, made the "power to the people" sign with their upraised and clenched fists. After warning the demonstrators, the police arrested 40 of them, including appellant. For participating in the demonstration, Grayned was tried and convicted of violating two Rockford ordinances, the "anti-picketing" ordinance and the "anti-noise" ordinance. A $25 fine was imposed for each violation.