Police are not babysitters. They dont just come out to make sure everyone is happy and move along. They obviously saw something or heard something which led to the tickets on both parts. They were doing there job. If you didnt want it on your record you should have gone to trial and not paid the tickets. I found below what it says about expungement in Missouri. You would definitely need to hire a lawyer and there is probably a certain amount of time you have to wait. By paying your fines, you pretty much plead guilty to the charge. I know you say it is unfair, and honestly, I know how you feel. But you have to remember, it's the government we are talking about and many things they do is not fair!
Expungement
In Missouri, under some circumstances, you may be able to have a criminal record expunged, which is the process of legally destroying, obliterating or striking out records or information in files, computers and other depositories relating to criminal charges.
You are eligible in Missouri for expungement if your arrest was based on false information and the following conditions exist:
There is no probable cause to believe you committed the offense
No charges will be pursued as a result of the arrest
You have no prior or subsequent misdemeanor or felony convictions
You did not receive a suspended imposition of sentence for the offense
No civil action is pending relating to the arrest or records sought to be expunged
If you qualify, you may file a verified petition for expungement in the civil division of the circuit court in the county of your arrest. The court then sets a hearing on the matter no sooner than 30 days from the filing of the petition. If the court finds that you are entitled to expungement of any record, it must enter an order directing expungement.

