From Michael Eric Dyson’s I May Not Get There With You:

We have surrendered to romantic images of King at the Lincoln Memorial inspiring America to reach, as he reached with outstretched arms, for a better future. All the while we forget his poignant warning against gradual racial progress and his remarkable threat of revolution should our nation fail to keep its promises. Still, like all other great black orators, King understood the value of understating and implying difficult truths. He knew how to drape hard realities in soaring rhetoric that won the day because it struck the right balance of outrage and optimism. To be sure, we have been long on King’s optimism while shortchanging his outrage.