Martin Luther King, more than any other figure, shaped American life from the mid-'50s to the late '60s. This was a time when large numbers of Americans, barely recognized as such by sanctioned power, dared to dream of what the country could be at its best, in the face of what often was its worst. For example, in December, 1955, days after Montgomery civil rights activist Rosa Parks refused to obey the city's rules mandating segregation on buses, a bus boycott was launched and King was elected as president of the newly formed Montgomery Improv ....