Anti-Catholic animus in the United States reached a peak in the 19th century when the Protestant population became alarmed by the influx of Catholic immigrants. Some American Protestants, having an increased interest in prophecies regarding the end of time, claimed that the Catholic Church was the Whore of Babylon in the Book of Revelation. The resulting "nativist" movement, which achieved prominence in the 1840s, was whipped into a frenzy of anti-Catholicism that led to mob violence, the burning of Catholic property, and the killing of Catholics. This violence was fed by claims that Catholics were destroying the culture of the United States. The nativist movement found expression in a national political movement called the Know-Nothing Party of the 1850s, which (unsuccessfully) ran former president Millard Fillmore as its presidential candidate in 1856.