The TET offensive
The offensive started in Vietnam new lunar year, known as lunar holiday. The north Vietnamese communist regime and the Vietcong, the rebel group that was fighting against the south Vietnam regime launched a series of attacks. the USA joined the war with an aim of containing the spread of communism as the North wanted to reunite with the south.
They gained popular support by speaking out against Communists in the United States.
Poll tax
grandfather clause
literacy test
property ownership
Thomas Jefferson said that all men have the right to life, liberty and the pursuit of happiness (though Jefferson did not originally think of the last one). Keep in mind that by "men" he means white, well-off men, not women or slaves.