large numbers during the 1910s). As labor recruiters paid to relocate large numbers of refugees to Colorado, white residents became increasingly enraged at the presence of the "radical aliens". During the First Red Scare of 1920, significant numbers of white Coloradans joined nativist and "one hundred percent American" organizations. Despite these sentiments, corporations continued to recruit Mexicans. In 1921, John Galen Locke harnessed the intensifying anti-Mexican feelings and organized the KKK in Colorado. By 1925, the KKK had emerged as the dominant political force in Colorado, running on campaigns of law and order and anti-Mexicanism. The KKK deliberately held rallies in cities with large Mexican neighborhoods. Johnson–Reed Act In the years following World War I, the United States nearly entirely shut out immigration from the rest of the world. In 1921, Congress passed the "Emergency" Quota Act of 1921, which set immigration levels to "3 percent of the number of foreign-born persons of each nationality" living in the U.S. as determined by the 1910 United States census. This Act was meant to reserve most immigration quota slots to northwestern European countries, which received the largest number of the 350,000 total slots created. Immigration restrictionists, however, were not satisfied, and U.S. Representative Albert Johnson and Senator David Reed responded by pushing for even stricter quotas. The resulting Johnson-Reed Act reduced the quota from 3 percent to 2 percent, and changed the census base from 1910 to 1890, which meant that only people from West and North Europe could migrate. For Mexicans, however, the effect of the law was complicated, as the quota system applied only to countries outside the Western Hemisphere, meaning there were no caps on immigration from any Latin American country. This lack of a quota for Mexicans was controversial amongst the U.S. nativist movement, who were outraged at the large numbers of Mexican immigrants entering the country - including thousands during the Cristero War (1926-1929). Immigration restrictionists, who desired to limit the number of non-white people in the U.S., felt that immigration from Mexico, even when only to fill labor gaps, was dangerous to the nation. One article in The Saturday Evening Post asked, "How much longer [are] we going to defer putting the Mexican Indian under the quota law we have established for Europe?" The East Texas congressman John C. Box went so far as to state that Mexicans would lead to the "mongrelization" of white America.