“In a democracy, thumping majorities prevail.”

"Journeying to democracy" in The Boston Globe (18 October 2007) http://www.boston.com/bostonglobe/editorial_opinion/oped/articles/2007/10/18/journeying_to_democracy/
Context: I fully understand the men behind Al Qaeda. They have tried to assassinate me twice before. The Pakistan Peoples Party and I represent everything they fear the most — moderation, democracy, equality for women, information, and technology. We represent the future of a modern Pakistan, a future that has no place in it for ignorance, intolerance, and terrorism.
The forces of moderation and democracy must, and will, prevail against extremism and dictatorship. I will not be intimidated. I will step out on the tarmac in Karachi not to complete a journey, but to begin one. Despite threats of death, I will not acquiesce to tyranny, but rather lead the fight against it.

Source: The Third Wave: Democratization in the Late Twentieth Century (1991)

The Theory of Democracy Revisited (1987), 1. Can Democracy Be Just Anyting?

Review of Democracy in Europe (1878)
Context: The one pervading evil of democracy is the tyranny of the majority, or rather of that party, not always the majority, that succeeds, by force or fraud, in carrying elections. To break off that point is to avert the danger. The common system of representation perpetuates the danger. Unequal electorates afford no security to majorities. Equal electorates give none to minorities. Thirty-five years ago it was pointed out that the remedy is proportional representation. It is profoundly democratic, for it increases the influence of thousands who would otherwise have no voice in the government; and it brings men more near an equality by so contriving that no vote shall be wasted, and that every voter shall contribute to bring into Parliament a member of his own opinions.

Universal Passion; reported in Bartlett's Familiar Quotations, 10th ed. (1919).

Misattributed to Samuel Adams as early as 1990. Also misattributed to John Adams. Actually originates with Diane Ackerman, who, in an article on Samuel Adams, "The Man Who Made a Revolution", published in the September 6, 1987 issue of the widely circulated Sunday newspaper supplement Parade, wrote: "Early on, he realized that revolutions don't require a majority to prevail, but rather an irate, tireless minority keen to set brushfires in people's minds." (page numbers vary, article on pp. 20–23 in most editions with the preceding quote on p. 22 https://news.google.com/newspapers?id=qfQaAAAAIBAJ&pg=4292%2C1111900) Source: Mansour Khalid, The Government They Deserve: The Role of the Elite in Sudan's Political Evolution, London and New York: Kegan Paul International, 1990, p. 17 https://books.google.com/books?id=jZ9yAAAAMAAJ&q=brushfires. Source: Will Bunch, The Backlash: Right-Wing Radicals, Hi-Def Hucksters, and Paranoid Politics in the Age of Obama, New York: Harper, 2010, p. 49. Source: https://www.barrypopik.com/index.php/new_york_city/entry/it_does_not_require_a_majority_to_prevail_but_rather_an_irate_tireless_mino, https://lists.h-net.org/cgi-bin/logbrowse.pl?trx=lx&sort=3&list=H-OIEAHC&month=1310, http://listserv.linguistlist.org/pipermail/ads-l/2013-October/
Misattributed

Marxism: Essential Writings, "The State and Revolution"
The State and Revolution (1917)

The Authoritarian Personality (1950), p. 976, co-written with Else Frenkel-Brunswik, Daniel Levinson, and Nevitt Sanford