Why is the word "democracy" not in the preamble of the US Constitution?

Majority-rules democracy is the way that majorities run roughshod over minorities, destroying rights and all ideas of equality under the law. No fair-minded person wants anything to do with democracy.

—Thomas Jefferson

Meanwhile, when the Democratic Party formed in 1828, it was with a Tory outlook keen on robbing others of their rights:

What does it mean when someone tells you they love you and want you in their life, but doesn't want to commit?

In other words, our Founding Fathers and other Whig intellects of that time well understood that democratic methods are the surefire means to do serious damage to the rights guaranteed under republican self-government.

[with republicanism being the rights-protecting form of governance afforded us by our Constitution]

To blacks: “You can’t drink from that water fountain… eat in this cafeteria… ride this bus… go to this school. We voted fair and square and your side lost.

What does it mean when a guy says he doesn't want to ruin the friendship? Is he rejecting me or is there another explanation? Why would a guy choose not to risk the friendship if he has feelings for me?

—Alexis de Tocqueville

Another tendency, which is extremely natural to democratic nations and extremely dangerous, is that which leads them to despise and undervalue the rights of private persons.

To slaves: “You can forget your notions of freedom. We voted fair and square and your side lost.”

Nicotine Has a Bad Rap. There Might Be Some Very Good Health Uses for It. - Slate Magazine

The republican is the only form of government which is not eternally at open or secret war with the rights of mankind.

Why? Try these on for size:

To Indians: “Pack up what belongings you can carry and start walking to Oklahoma. Your fertile lands are ours now. We voted fair and square and your side lost.”

How will the newly imposed trade tariffs affect the global economy?

—Benjamin Franklin

I do not say that democracy has been more pernicious on the whole, and in the long run, than monarchy or aristocracy. Democracy has never been and never can be so durable as aristocracy or monarchy; but while it lasts, it is more bloody than either.

When the people find they can vote themselves money, that will herald the end of the republic.

Why do you like Justin Trudeau when he's hated in Canada?

—John Adams