Missouri Revised Statutes Title XXXVIII. Crimes and Punishment; Peace Officers and Public Defenders § 575.250. Disturbing a judicial proceeding--penalty

1. A person commits the offense of disturbing a judicial proceeding if, with the purpose to intimidate a judge, attorney, juror, party or witness and thereby influence a judicial proceeding, he or she disrupts or disturbs a judicial proceeding by participating in an assembly and calling aloud, shouting, or holding or displaying a placard or sign containing written or printed matter, concerning the conduct of the judicial proceeding, or the character of a judge, attorney, juror, party or witness engaged in such proceeding, or calling for or demanding any specified action or determination by such judge, attorney, juror, party, or witness in connection with such proceeding.

2. The offense of disturbing a judicial proceeding is a class A misdemeanor.