Acts 19:37 - 39

"You have brought these men here, though they have neither robbed temples nor blasphemed our goddess. If, then, Demetrius and his fellow craftsmen have a grievance against anybody, the courts are open and are proconsuls. They can press charges. If there is anything further you want to bring up, it must be settled in a legal assembly." NIV translation

The city clerk realized that the Christians had not done anything wrong and that it was Demetrius that was causing the riot. He reminded the people that they had courts to handle matters such as this between men.

Acts 19:40 & 41

"'As it is, we are in danger of being charged with rioting because of today's events. In that case we would not be able to account for this commotion, since there is no reason for it.' After he had said this, he dismissed the assembly." NIV translation

What a turn of events and an example of how God takes care of his own. Not only did God turn away the anger of this mob seeking to harm his people, but He used this clerk to convict the hearts of the rioters as well.