The American people would not accept the U.S. Constitution without a Bill of Rights because they didn't trust those in power. Today, it remains a living document that has changed and grown over a long period of time. The human and civil rights we cherish today are a reflection of the class struggle down through the years. The American people see the Bill of Rights as the foundation of democracy. They fight for their basic rights, to preserve and expand democracy, based on the Bill of Rights.
Socialism is the rejection of capitalism.
It is a transformation of power from the ruling class to the working class. It is a transfer of the country's main industries, resources, etc., from private ownership to pubic ownership. The first stage of socialism here will also be different. The economic and political power of the people will most likely be expressed in an elected anti-monopoly coalition government. It will be based on new laws that will restrain and restrict the capitalist class.