Saturday roundabout

Tesco sues the Guardian: Tim Worstall has the lowdown.

King's "I have a dream" speech: sound and pictures at Stubborn Facts.

Forty years on: Cobb looks at black economic attainment since King.

Samizdata's quote of the day echoes calls for an Olympic boycott.

Chris Muir has a sketchy report from the Green Zone.

And finally,

Science Punk has a look at West Coast geography.