Unlawful use of weapons--exceptions--penalties. RSMo 571.030.1 A person commits the crime of unlawful use of weapons if he or she knowingly:
(4) Exhibits, in the presence of one or more persons, any weapon readily capable of lethal use in an angry or threatening manner; or...
Peace Disturbance--penalties. RSMo 574.010. 1. A person commits the crime of peace disturbance if:
(1) He unreasonably and knowingly disturbs or alarms another person or persons by:
(a) Loud noise; or
(b) Offensive language addressed in a face-to-face manner to a specific individual and uttered under circumstances which are likely to produce an immediate violent response from a reasonable recipient; or
(c) Threatening to commit a felonious act against any person under circumstances which are likely to cause a reasonable person to fear that such threat may be carried out; or
(d) Fighting; or
(e) Creating a noxious and offensive odor;
(2) He is in a public place or on private property of another without consent and purposely causes inconvenience to another person or persons by unreasonably and physically obstructing:
(a) Vehicular or pedestrian traffic; or
(b) The free ingress or egress to or from a public or private place.