1920: The Klan has 3,000 members and hires a marketing firm (Tucker 58). The Klan also hires D.C. Stephenson to sell memberships (Tucker 77).

End of 1921: The Klan has over 100,000 members (Tucker 58).

1923-1924: At its peak the Indiana Klan claims 350,000 members (Tucker 212).

March 13, 1923: An anti-Klan attorney holds a talk in South Bend (Tucker 115). A Klan speaker holds a talk a few weeks later (Tucker 120). The talks showed that supporters and opponents of the Klan were moving into South Bend (Tucker 115).

May 17, 1924: The main riot by Notre Dame students against the Klan occurs (Tucker 153). The students steal the Klan members' robes and break their cross made of lightbulbs (Tucker 154). By late afternoon, the Klan cancels its parade due to the violence and a rainstorm (Tucker 160). As the Klansmen leave, the students try to catch them in their cars (Tucker 162). Some cars are bent and a load of instruments are destroyed (Tucker 162). This was the students' revolution against the Klan ("Klan Display..." 1).

May 19, 1924: A second riot occurs when a false rumor circulates that the Klan captured a student (Tucker xvii). When the students arrive at the Klan's downtown headquarters, Klansmen are waiting and a fight breaks out ("Mayor Seebirt..." 1). The fight only stops when Notre Dame's president is called to the scene ("Mayor Seebirt..." 1). 

August 23, 1924: The Klan informs its members that their Mishawaka, Indiana office would have to close because of a lack of funds (Nevel 89).

October 18, 1924: A rally scheduled for this day was canceled because the Klan was worried about negative publicity before the upcoming election (Tucker 185).

January 1, 1925: Notre Dame wins the national football championship and helps fight anti-Catholic prejudice in the process (Tucker 188).

March 15, 1925: D.C. Stephenson abducts and rapes Madge Oberholtzer (Tucker 199). When they arrive at Hammond, Indiana, the next day, Madge buys poison and takes it (Tucker 201). Stephenson takes her back to her house but she dies on April 14 (Tucker 204). Stephenson is charged with murder (Tucker 211). This episode begins the downfall of the Klan (Tucker 212).

1926: The Indiana Klan has less than 15,000 members (Tucker 212).