From George Stroum­boulopoulos Tonight: It’s been 50 years since King’s speech, and the anniver­sary is inspiring some powerful and thought-provoking looks back at the March, the speech itself and the effects of both. Here are some sites and posts that are worth a look. Each of them offers a different perspec­tive on a major moment in the history of U.S. civil rights. · Go to 5 ways of looking at “I have a dream,” 50 years later →