An Enemy of the People (original Norwegian title: En folkefiende) is an 1882 play by Norwegian playwright Henrik Ibsen…
Act IV
At the town meeting in Captain Horster’s house, Dr. Stockmann is about to read his water report to the townspeople. Billing, the family, the mayor, Aslaksen, and Hovstad are there. Aslaksen is elected the chair of the meeting to serve as a mediator. What ends up happening is that Aslaksen is trying to sabotage the doctor and stop him from communicating the report. When Stockmann finally gets a chance to speak, he talks about the contamination of the water but also gets into the town leaders and how they are the ones who know what is going on. He talks to the town about education and corruption too. The town feels insulted by these accusations and anger starts growing in the room. By the end of the meeting the town has rebelled as a mob against Dr. Stockmann and have marked him as an enemy of the people. Dr. Stockmann is exiled from the town.
https://en.wikipedia.org/wiki/An_Enemy_of_the_People