In history, when one group of people requires to declare itself free from another, and to become free as God and Nature intends them to be, it is essential that they describe why they are declaring their freedom.
We think our reasons are obvious, that all men are created equal, that God has given them certain rights which can't be violated, including life, liberty, and pursuit of happiness. Governments are formed to protect these rights, and governments get their power from people. Whenever one government works against human rights, people have right to end that government and start new one which will bring about safety and happiness. Of course, cautions people know that old government must not be charged for minor reasons; further, experience has shown that people are more eager to suffer things which are not horrible than to get rid of governments that they are used to.