I can't say it better than these patriots who helped write the US Constitution. Who did not fear going against the most powerful government in the world at the time eg the British Empire. We owe it to those that sacrificed their lives to sustain what they started.
"The tree of liberty must be refreshed from time to time with the blood of patriots and tyrants."
-- Thomas Jefferson
"I believe there are more instances of the abridgment of the freedom of the people by gradual and silent encroachment of those in power than by violent and sudden usurpations." -- James Madison
"It is a common observation here that our cause is the cause of all mankind, and that we are fighting for their liberty in defending our own." -- Benjamin Franklin
"A sacred respect for the constitutional law is the vital principle, the sustaining energy of a free government." -- Alexander Hamilton
Then these from some later leaders:
"No man is entitled to the blessings of freedom unless he be vigilant in its preservation." -- General Douglas MacArthur
"The history of liberty is a history of the limitation of government power." -- Woodrow Wilson
"Let every nation know, whether it wishes us well or ill, that we shall pay any price, bear any burden, meet any hardship,support any friend, oppose any foe, in order to assure the survival and the success of liberty." -- John F. Kennedy
"Today, we need a nation of Minutemen, citizens who are not only prepared to take arms, but citizens who regard the preservation of freedom as the basic purpose of their daily life and who are willing to consciously work and sacrifice for that freedom." -- John F. Kennedy
And last from a couple of well knowm authors:
"It is a worthy thing to fight for one's freedom; it is another sight finer to fight for another man's." -- Mark Twain
Louis L'Amour book The Man Called Noon:
"here in western lands men were fighting ,again the age-old struggle for freedom and for civilization, which is one that always must fought for. The weak, and those unwilling to make the struggle, soon resign their liberties for the protection of poweful men or paid armies; they begin by being protected, they end by being subjected."