A. 
A person commits the offense of assault if:
1. 
The person attempts to cause or recklessly causes physical injury to another person;
2. 
With criminal negligence the person causes physical injury to another person by means of a deadly weapon;
3. 
The person purposely places another person in apprehension of immediate physical injury;
4. 
The person recklessly engages in conduct which creates a grave risk of death or serious physical injury to another person;
5. 
The person knowingly causes physical contact with another person knowing the other person will regard the contact as offensive or provocative; or
6. 
The person knowingly causes physical contact with an incapacitated person, as defined in Section 475.010, RSMo., which a reasonable person, who is not incapacitated, would consider offensive or provocative.
A. 
A person commits the offense of assault of a Law Enforcement Officer, emergency personnel or Probation and Parole Officer if:
1. 
Such person recklessly causes physical injury to a Law Enforcement Officer, emergency personnel or Probation and Parole Officer;
2. 
Such person purposely places a Law Enforcement Officer, emergency personnel or Probation and Parole Officer in apprehension of immediate physical injury;
3. 
Such person knowingly causes or attempts to cause physical contact with a Law Enforcement Officer, emergency personnel or Probation and Parole Officer without the consent of the Law Enforcement Officer, emergency personnel or Probation and Parole Officer.
B. 
As used in this Section, "emergency personnel" means any paid or volunteer firefighter, emergency room or trauma center personnel, or emergency medical technician as defined in Subdivisions (15), (16) and (17) of Section 190.100, RSMo.
A. 
A person commits the offense of harassment if he/she:
1. 
Knowingly communicates a threat to commit any felony to another person and in so doing, frightens, intimidates, or causes emotional distress to such other person; or
2. 
When communicating with another person, knowingly uses coarse language offensive to one of average sensibility and thereby puts such person in reasonable apprehension of offensive physical contact or harm; or
3. 
Knowingly frightens, intimidates, or causes emotional distress to another person by anonymously making a telephone call or any electronic communication; or
4. 
Knowingly communicates with another person who is, or who purports to be, seventeen (17) years of age or younger and in so doing and without good cause recklessly frightens, intimidates or causes emotional distress to such other person; or
5. 
Knowingly makes repeated unwanted communication to another person; or
6. 
Without good cause engages in any other act with the purpose to frighten, intimidate, or cause emotional distress to another person, cause such person to be frightened, intimidated, or emotionally distressed, and such person's response to the act is one of a person of average sensibilities considering the age of such person.
B. 
Harassment is a class A misdemeanor unless:
1. 
Committed by a person twenty-one (21) years of age or older against a person seventeen (17) years of age or younger; or
2. 
The person has previously pleaded guilty to or been found guilty of a violation of this Section, or of any offense committed in violation of any County or municipal ordinance in any State, any State law, any Federal law, or any military law which, if committed in this State, would be chargeable or indictable as a violation of any offense listed in this Subsection.
C. 
This Section shall not apply to activities of Federal, State, County or Municipal Law Enforcement Officers conducting investigations of violation of Federal, State, County or municipal law.
A. 
Definitions. As used in this Section, the following terms shall have these prescribed meanings:
COLLISION
The act of a motor vehicle coming into contact with an object or a person.
INJURY
Physical harm to the body of a person.
MOTOR VEHICLE
Any automobile, truck, truck-tractor, or any motorbus or motor-propelled vehicle not exclusively operated or driven on fixed rails or tracks.
UNATTENDED
Not accompanied by an individual fourteen (14) years of age or older.
B. 
A person commits the offense of leaving a child unattended in a motor vehicle if such person knowingly leaves a child ten (10) years of age or less unattended in a motor vehicle and such child injures another person by causing a motor vehicle collision or by causing the motor vehicle to injure a pedestrian.
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Note — Under certain circumstances this offense can be a felony under state law.