Summary: Beware of mobs of hundreds or becoming a mob of one.
Act 19:32 Some therefore cried one thing, and some another: for the assembly was confused; and the more part knew not wherefore they were come together.
Sounds like a great many meetings that I have attended. Some were bored and doodling like me or trying not to be called on or asked questions not very relevant just to end awkward silences or stop endless quibbling. Sometimes what was put forth as a policy in the beginning of the meeting got convoluted so much that by the end of the meeting the policy flip flopped.
At one place, I just started dropping out of meetings. No one fussed or seemed to miss me so while they discussed the same things for months with no resolution I was out accomplishing tasks that were needed. I even turned a meeting I chaired into a email session that saved me time because the face to face meeting had too many derails and rabbit trails. I used that hour far more effectively.
Our story here started out with some silversmiths that made idols being concerned about their bottom line. Paul was converting people to Christ, which meant they no longer bought the silver idols. Angered by this the silversmiths started spreading the word that Paul was seeking to make Diana’s temple despised and upset the order of the world. In a sense, they were right because Paul was preaching one God and one only, which smacked down all the gods/goddesses. When people came to Christ, the idols would be done away with and temple attendance would go down, but that was not the real goal. The goal was to win people to Christ. The others things were the result of coming to faith in Christ.
Act 19:29 And the whole city was filled with confusion: and having caught Gaius and Aristarchus, men of Macedonia, Paul’s companions in travel, they rushed with one accord into the theatre.
Consequently, the whole city became emotionally confused, not having all the facts and running on high emotion can easily cause that. So they drag these men into the theatre to publicly denounce and abuse them. People start pouring in and others seeing the crowd start heading that way as well. As they go, they are probably asking what is going on and most likely got varying answers. Thus when this crowd was complete you have the situation described in verse 32.
Act 19:34 But when they knew that he was a Jew, all with one voice about the space of two hours cried out, Great is Diana of the Ephesians.
Add to the confusion the introduction of someone or something despised and boom you have a two hour shouting session that makes anything you would hear at a Super Bowl game sound like a whisper.
In this situation a town clerk or government official comes in, calms them down by giving them the facts and sending them home. He did well because often once the emotions have reached this peak facts mean very little. It is a big swing from shouting for two hours to quietly leaving the theatre.
This method of spreading a lie for someone’s gain or agenda, raising emotions and getting those emotions expressed by shouting with the intent of leading them into violence of some sort has been practiced many times throughout history. Indeed, we have seen it many times in our life time.