Sentence:  We will recall that the still confident <WSD>liberals</WSD> of the Truman administration gathered with other Western utopians in San Francisco to set up the legal framework , finally and at last , to rationalize war - to rationalize want and fear - out of the world : the United Nations . 
Meaning of the word marked with <WSD> tags:  a person who favors a political philosophy of progress and reform and the protection of civil liberties