The potential for violence after passage of the Kansas-Nebraska Act, and indeed episodes of violence, increased on the border between Missouri and Kansas as both Free Soiler and pro-slavery factions began actively arming themselves. An agent of the New England Emigrant Aid Society in Kansas, Charles L. Robinson, requested with some urgency a shipment of several hundred rifles and field guns.(i) Guns were sent to aid Free Soilers in Kansas often with the support of northeastern clergy and their congregations. Thus Sharps Rifles sent by Henry Ward Beecher’s congregation became know as “Beecher Bibles”. Likewise, according to Potter, armed militias from the South began forming to support the pro-slavery cause in Kansas. (i)
ABOUT THE POLITICAL CARTOON: Another Currier satire favoring American party candidate Millard Fillmore. A “buck” (James Buchanan) runs toward the White House, visible in the distance, as the two rival candidates take aim at him with their shotguns. Republican John C. Fremont’s gun explodes (left), as he struggles to free himself from a pool of “Black Mud.” On the far left his two abolitionist supporters Henry Ward Beecher and editor Horace Greeley are also mired in an “Abolition Bog.” Fremont: “Oh! Oh! Oh! I’ve got Jessie this time–” (a puzzling allusion to his wife Jessie Benton). Greeley: “Oh! Brother Beecher! our Kansas Gun has bursted and upset our gunner. I’m afraid we put in too big a load.” Reference is to the Kansas–NebraskaAct of 1854 and the ensuing violence in Kansas, an issue exploited by the Republicans. Beecher: “Confound the Gun! if I can only get out of this muss I’ll stick to preaching and let fire-arms alone.” The oblique reference to Beecher’s part in outfitting armed antislavery emigrants for Kansas is made in more obvious terms in “Col. Fremont’s Last Grand Exploring Expedition in 1856” (no. 1856-20). On “Union Rock” (right), which is square in the path toward the White House, stands Millard Fillmore. He aims his flintlock at Buchanan and says confidently, “Ah! Fremont, your sectional Gun has exploded just as I predicted; but my American rifle will bring down that Old Buck.” MEDIUM: print on wove paper : lithograph ; image 24 x 39 cm. CREATED/PUBLISHED:N.Y. : Published at No. 2 Spruce Street,  Source: Library of Congress
Eli Thayer of Massachusetts, who had been “aroused very early in the course of the battle in Congress,” incorporated the Massachusetts Emigrant Aid Company with the intent of assisting emigrants who were willing to move west.(i) Details of his “Plan of Operation” found their way into “Horace Greeley’sNew York Tribune where, despite the fact that they presented more dreams than facts, managed to be published and to alarm men in western Missouri.(i)
“…It conjured up in their minds the picture of a vast, wealthy, and overpowering abolitionist organization ready to hurl 20,000 hirelings upon their borders.”(i)
On July 29th, Missourians met in Weston, Missouri and formed the “Platte County Self-Defensive Association” “asserting their readiness to go to Kansas ‘to assist in removing any and all emigrants who go there under the auspices of Northern Emigrant Aid Societies.'”(i) Organization of secret societies followed “including the ‘Blue Lodges,’ and ‘Platte County Regulators.’”(i)
Historian David H. Bennett contends, “Only in extraordinary times could nativism shape the policies of and give its name to a major party. Such was the situation from I852 to 1854” as regards the Know Nothing Party.
Men of political prominence began to join. In several New England states, the Know Nothings became a formidable force by appealing to the antislavery wing of the former Whig party. But throughout much of the South, displaced Whigs looked to nativism to protect their proslavery institutions. Passage of the Kansas-Nebraska Act accelerated the movement’s growth; with talk of “bleeding Kansas” on every lip, converts flocked in at the rate of five thousand per week in 1854. Men with promising futures began to seek entry. In the South there were John Bell (right), to be presidential candidate of the Constitutional Union party in 1860, and John J. Crittenden, senior senator from Kentucky, author of the compromise plan to solve the sectional struggle in the months before the outbreak of war. Henry Winter Davis, powerful Whig from Baltimore, and Andrew Jackson Donelson became Know Nothings. In the North, Nathaniel P. Banks and Jerome C. Smith, who would ride the antialien tide to prominence, one as Speaker of the House of Representatives and the other as mayor of Boston, were initiated. Henry Wilson, vice-president of the United States two decades later, Edward Everett, a future secretary of state, and Edward Bates, Lincoln’s attorney general, came to the new party. After considering the triumphant run of victories for the Know Nothings in the fall elections, even Millard Fillmore joined, taking the secret rites of the Star Spangled Banner in his own home in late winter.
David H. Bennett, The Party of Fear: From Nativist Movements to the New Right in American History, 114.