Thomas Jefferson's comment is bad advice for any democracy. The last time some of the people in the USA took up arms against an elected government was during the civil war. That was a very terrible time for Americans.
Thomas Jefferson was not alone as you can see below. Our country was built on that we the people would have the power to resist our government if it trampled over our rights as Americans. As Jefferson once said "The tree of liberty must be refreshed from time to time with the blood of patriots and tyrants". So it's in our rights as Americans to fight for our rights as a free people to remain free.
"The right of the citizens to keep and bear arms has justly been considered, as the palladium of the liberties of a republic; since it offers a strong moral check against the usurpation and arbitrary power of rulers; and will generally, even if these are successful in the first instance, enable the people to resist and triumph over them."- Joseph Story
"If the representatives of the people betray their constituents, there is then no resource left but in the exertion of that original right of self-defense which is paramount to all positive forms of government, and which against the usurpations of the national rulers, may be exerted with infinitely better prospect of success than against those of the rulers of an individual state. In a single state, if the persons intrusted with supreme power become usurpers, the different parcels, subdivisions, or districts of which it consists, having no distinct government in each, can take no regular measures for defense. The citizens must rush tumultuously to arms, without concert, without system, without resource; except in their courage and despair." - Alexander Hamilton
"As civil rulers, not having their duty to the people before them, may attempt to tyrannize, and as the military forces which must be occasionally raised to defend our country, might pervert their power to the injury of their fellow citizens, the people are confirmed by the article in their right to keep and bear their private arms." - Tench Coxe
Before a standing army can rule, the people must be disarmed, as they are in almost every country in Europe. The supreme power in America cannot enforce unjust laws by the sword; because the whole body of the people are armed, and constitute a force superior to any band of regular troops." - Noah Webster
"They that can give up essential liberty to obtain a little temporary safety deserve neither liberty nor safety." - Benjamin Franklin,