Allow me to quote the law:
"11.10 Handling an Aggressive Suspect(s)
When handling a suspect(s) who is not cooperating and who is/has become aggressive, it is important to remain in/take control of the situation, and, if necessary, to use the appropriate non-lethal equipment provided; ie: the baton. See Section 11.9 for additional details."
You were aggressive as you began yelling louder and louder, and completely taking the situation out of control. As such, I use my non-lethal equipment, the baton, to regain control of the situation.
EDIT: Alright, let's get a bit more backstory on this.
I was originally coming from the Forest, taking a look around the area, until officer Esteban requests assistance to deal with a suspect. As such, I move towards Sub House 11, the location which Esteban requires help at, and park by the house. I do this mainly as I assume that the suspect owns the house, or at least lives there, as Esteban says nothing about it (and he is also already blocking the main road with his own vehicle).
I step out of the vehicle, and start having a conversation with Esteban and the suspect. After some time, a stranger approaches, asking for me. In response, I say yes, and he starts requesting me to remove my vehicle. As I am currently not finished with the suspect, whom we were talking to due to illegal transport of an AK-47, currently on the bonnet of his vehicle, I decide to stay.
At this point, the other man starts becoming aggressive, getting louder by the second as he nearly yells into my ear. This is a very disorderly conduct, and quite aggressive, so I proceed to regain control of the ongoing situation by using non-lethal equipment to try and stop the man from getting more aggressive (which obviously doesn't help as he seconds later calls me a twat, then tries to escape while we run after him to give him a ticket)
TL;DR: Was busy dealing with a suspect, random guy walks up, becomes aggressive and disorderly, I assert 'dominance' and regain control of the situation using non-lethal equipment.