No person shall knowingly resist or obstruct anyone known by the person to be a peace officer, jailer, emergency medical care provider under Chapter 147A of the Code of Iowa, or firefighter, whether paid or volunteer, or a person performing bailiff duties pursuant to Section 602.1303[4] of the Code of Iowa, in the performance of any act that is within the scope of the lawful duty or authority of that officer, jailer, emergency medical care provider, or firefighter, or person performing bailiff duties, or shall knowingly resist or obstruct the service or execution by any authorized person of any civil or criminal process or order of any court. The terms “resist” and “obstruct” as used in this section do not include verbal harassment unless the verbal harassment is accompanied by a present ability and apparent intention to execute a verbal threat physically.
(Code of Iowa, Sec. 719.1)