New Orleans

Some of the victims had been accused of murdering a police chief, but were acquitted after a trial.

Angry about the verdict, a mob of racist vigilantes in the city attacked and publicly hanged them.

Mayor LaToya Cantrell is due to apologise for the killing - believed to be the largest recorded lynching in US history - on 12 April.

She will issue the apology at an Italian-American cultural centre in the city, a spokesman told the Associated Press news agency.

What happened in 1891?

Cunningham will be suspended for the Pelicans’ game against the Phoenix Suns.

He's chosen to deliver remarks at Warren Easton Charter High School, the same school he visited on the first anniversary of the catastrophic storm. He is accompanied by his wife, Laura, whose library foundation helped rebuild what is the oldest public school in New Orleans.

The school's success is one of the president's brighter moments in what was an extremely trying time for the Bush administration. Bush was vilified for his government's lackluster response.

He offered the city as an example of what can happen when people rally to build a better future after extraordinary trials.

The president's first stop on a visit marking the storm's 10th anniversary was Tremé, one of the oldest black neighborhoods in America and an area that experienced significant flooding during Katrina. A cheering crowd welcomed him to a place where homes inundated by the storm have been rebuilt.