The reasons for social movements in the United States in the second half of the 20th century?

The main reason for social movements in the United States in the second half of the twentieth century. the struggle for equality of black Americans with whites and the dissatisfaction of Americans with the unsuccessful war in Vietnam, launched by President Lyndon Johnson, led to a radical transformation of American society, the emergence of new trends in the youth environment (for example, hippies fighting for peace and free love).