We all sometimes raise our voice a bit too loud but there is usually is one person who does it habitually. This person uses their voice to intimidate others into doing as they say. They are truly using a “bully pulpit” technique. Those who are timid or just “want peace” will find ways to accommodate the bully even when they are clearly wrong and/or their opinion is opposite the majority.
The best way to deal with these individuals is through speaking softly and carrying a big rifle (stick was taken). Seriously though, when you are extremely courteous to those individuals but not intimidated by their rants those around you will become stronger as well. For example you can say ” I appreciate your passion but I believe it’s important that other voices are heard and therefore I hope you’ll listen to mine.” In the end the crowd might still give into the bully but at least you will be free from being another one of their victims.