Claudia Jones was a courageous leader in the Communist Party of the USA, and pioneered the West Indian Gazette and Caribbean Carnival in the UK. Her writing is sharp, and the selection reveals a lot about her interesting life and times (though the introductory pieces by Carole Boyce Davies are a waste of space; revealing little and containing little political awareness).
But attempts (as Davies does somewhat in this selection, and much more in her other book on Jones) to portray her as someone 'Left of Karl Marx' who gave much-needed contributions on race and gender to Marxism, are severely misinformed about the extent to which Marx, Engels, and Lenin (as well as countless other solid Marxists) wrote valuably and accurately about these issues.
What's more, Jones follows the CPUSA (and the rest of Comintern) into a number of errors, particularly on the Black national question and the tactic of the popular front against racism and neo-/colonialism (i.e. as opposed to united working class opposition), though I'm sure she flip-flopped on this issue as often as the rest of them.
But despite all this, we should remember Claudia Jones, her writing, her valuable contributions (particularly to the Afro-Caribbean movement in the UK), and her dedication to the power of the united working class to overcome racism, sexism, and capitalism.