What was the turning point in the African-American Civil Rights Movement?

The turning point in the American CR movement can be said to be a number of events: 1955 - the lynching of Emmett Till because he had an open casket funeral which exposed the brutality, well-documented by the media, his killers confessed to the crime (couldn't be tried (double jeopardy) 1955-6 - Montgomery Bus Boycott because early successful example of the economic power of the AA community 1963 - MLK I have a dream because famous speech, 200,000+ attendees at the march, shown worldwide on TV 1968 - MLK's murder because the CR movement lost its most charismatic leader and this heralded a shift in tone from the nonviolent tactics supported by those within the SCLC/MIA (Southern Christian Leadership Conference/Montgomery Improvement Association) to tactics seen as more violent, coinciding with a drop in support for the movement. All of the above can be seen as turning points in that they marked significant change, whether for better or for worse.