How a Liberal Ideal Became a Conservative Cause Listen Download Embed Share Share this on Facebook (Opens in a new window) Share this on Twitter (Opens in a new window) Share this via Email US President Lyndon Johnson (l) shakes hands with the US clergyman and civil rights leader Martin Luther King (c) 03 July 1964 ( (Getty Images) ) Produced by Jillian Weinberger Produced by PRI and WNYC