I have this ability to stay doe eyed and emotionless, regardless of the subject matter or the volume of voices in the room. Long pauses in between someone blasting their rant across a room before I respond, if someone interrupts me I immediately stop talking and let them talk and then once they are done I go right back where I was and start all over again with that same very sentence, even if I am interrupted for minutes and a dozen times. Then they realize that Ive been saying the same fucking sentence, or trying to, for 5 minutes and I have not responded to a single thing they have said. It doesn't take long and they will shut the fuck up long enough for you to say what you need to say because they don't want you to have to repeat it again. But, you can't say something after fighting for it, and then regurgitate it again in the argument and expect the same results. They wont let you do it again, it has to be a new argument/thought, so make your point and move on, don't be emotional and continually hit the same spot, move around, chop them down.
For years I operated this way at city council meetings. Joe Public came in all pissed off and wanted to spread their emotions all over the room, it just bounced right off. I was there to conduct business, not listen to feelings that didn't help the situation.