Forum and audience. One of the first rules of public speaking is to know your audience. If it is important for you to communicate ideas and to have those ideas be heard, then it is on you to conform to the people listening. Its an unfortunate truth. But, in reality, I have no obligation to hear you out or to be receptive to your ideas. If someone is speaking to me in an aggressive tone with body language to match, I will be more interested in ending the conversation and walking away than hearing them out.

This is especially true if the content of the conversation could have professional implications for people in work settings. If my coworker is using an emotional tone, speaking loudly, and aggressively gesturing, my first though is whether this will get elevated to human resources and if my job may be affected. Will this person put me on blast on social media to spite me? Will the resulting fallout affect my professional relationships?