What are some ways in the story that the masses of people are controlled by using religion and fear?

We do not really see the masses being controlled in the play.  It is really more implied -- not stated.  We only can see that control implied in the actions of the people that we see in the play.

Perhaps one of the most obvious examples of this is what happens to the people who sign the petition that John Proctor brings to court.  Danforth orders that all of the people who signed it should be arrested.  This would surely tend to control people through fear -- they would not want to expose themselves to that kind of trouble so they would try to go along with what the authorities want.

When I think of control through religion, I think of using religious belief to make people want to obey the authorities.  I don't see that going on in this play.  What I see is religion being used as a source of authority -- the court is meeting because the church has the authority to punish people who do not act according to what it says.  But to me, this is just using fear to enforce religion, not using religion to control people.