Relatives demand justice as police go on trial over Katrina
killings  Ronald Madison stayed on in New Orleans after
Hurricane Katrina - he could not bear to leave behind the family
dogs, a beloved pair of dachshunds called Bobbi and Sushi. It
cost him his life.  Madison, 40, who had the mental age of a
child, was shot by police one morrning on Danziger Bridge. James
Brisette, 19, was also killed, and four others, including two
women, seriously injured. All were black. None had committed a
crime.  Now seven police officers are set to stand trial for the
murders in a grim tale of race, trigger-happy police and an
apparent cover-up. 'This is a racial tragedy,' said the Rev
Raymond Brown, a black community leader and local head of a
civil rights group, the National Action Network. The city is
split over the trial. When the policemen were charged at New
Orleans's jail, a crowd of 200 gathered to cheer: 'Heroes!
Heroes!' One placard declared: 'Thanks for protecting our city.'
Now, they said, is no time to be prosec