A bloody case caused by a starting gun? ? ? ?

In the scene of the hotel, a fat black man jokingly took a starting gun and fired a few shots out of the window. The police and army not far away thought there were snipers, and immediately came to surround the hotel. Then there were various abuses of lynching and torture to extract confessions. Everyone in the room agreed, insisting that there were no guns and no one fired.
It was obviously a farce, and it could be clearly explained to the police that someone shot, but the starting gun was fired, which was a joke, and the one who shot it has already been shot dead by you. It is also true that the police abused the lynching in the movie to kill the fat black man who shot. But the people in this room would rather die than give in, die without speaking, and refuse to tell what happened. Even if the racially discriminatory white police listened to it, in the presence of military personnel and other police officers, wouldn't they kill everyone in the hotel?
In the end, the white police were brutalized and tortured for one night to extract a confession. Originally, only one death was enough, but as a result, more and more people were killed. The person who finally escaped told the whole thing in court two years later, and then came back with all kinds of strong condemnation. . . . . Why didn't you make it clear in the first place? Leaving aside racism, is this plot a bug?

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