The famous American evangelist Billy Sunday holds his first public crusade in Chicago. Over the course of his career as a popular religious speaker, at least 100 million Americans are estimated to have attended his sermons.
Billy (William Ashley) Sunday (1862-1935) traveled the country for revivalist sermons. His approach is to simplify traditional Christian teachings in an effort to appeal to the less educated populace. This means eliminating more complicated teachings that can be interpreted in multiple ways; one of the consequences of this approach is the strengthening of fundamentalism.
Billy Sunday's teachings are heavily laden with condemnations of moral evils of the day: alcohol, gambling, socialism, political corruption, etc. The underlying message is that Christians in America must take their Christianity into politics, using Christian doctrines as justification for eliminating everything in society to which they have religious objections.