As the founding fathers of the United States of America made clear in the
Declaration of Independence in 1776:
"When in the Course of human events, it becomes necessary for one people
to dissolve the political bands which have connected them with another, and
to assume among the powers of the earth, the separate and equal station to
which the Laws of Nature and of Nature's God entitle them, a decent
respect to the opinions of mankind requires that they should declare the
causes which impel them to the separation."
"...Governments are instituted among Men, deriving their just powers
from the consent of the governed, that whenever any Form of Government
becomes destructive of these ends, it is the Right of the People to alter or
abolish it, and institute new Government...