The U.S. Constitution says that WE, the people, not only have the right, but the duty, to replace the government, if we feel it does not represent the will of the peolpe.
Actually it is the Declaration of Independence that says that:
... Prudence, indeed, will dictate that governments long established should not be changed for light and transient causes; and accordingly all experience hath shown that mankind are more disposed to suffer, while evils are sufferable, than to right themselves by abolishing the forms to which they are accustomed. But when a long train of abuses and usurpations, pursuing invariably the same object evinces a design to reduce them under absolute despotism, it is their right, it is their duty, to throw off such government, and to provide new guards for their future security. — Such has been the patient sufferance of these colonies; and such is now the necessity which constrains them to alter their former systems of government. ...But you have the right idea.
Then I dare say, that We the People are remiss in our duty... I am sorry to say, I begin to think that is true...