George Albert Smith shared the following story,

I remember one day I was impressed to say to a missionary who was going to a certain town where they would not let us hold street meetings:
“Now remember, give the Lord a chance. You are going to ask a favor. Give the Lord a chance. Ask him to open the way.”

The young man went to that city, went into the office of the mayor, and asked if he could see him. He was going to ask if they might change the rule.

When he got there, he found that the mayor was out of town. The young man came out of the office, looked down the hall and saw on a door at the end of the hall, “Chief Constable’s Office.” He hesitated a moment, and something said to him: “Give the Lord a chance.” He walked into the chief constable’s office and told him what he had come for. When he finished the man said:
“Well, what street corner would you like?”

He said: “I don’t know this city as well as you do. I would not ask for a corner that would be undesirable, or where we would block the traffic. Would you mind going with me to select a corner?”
Just think of a missionary asking the chief constable to pick a corner on which to preach the gospel!

The constable said:

“Surely, I will go with you.”

In fifteen minutes they had one of the best corners in town, with permission to preach the gospel of Jesus Christ where it had not been preached on the streets since before the war [World War I]. …

(Teachings of Presidents of the Church: George Albert Smith, Chapter 17: The Strengthening Power of Faith)