Mexico City protest
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Mexicans challenge Pena Nieto's victory in huge march

Tens of thousands of people in Mexico City are demonstrating against the result of the presidential election, which was won by Enrique Pena Nieto.

The demonstrators, who are not necessarily linked to any particular party, say the vote was not fair.

They accuse Mr Pena Nieto's party, the PRI, of buying votes; some carried banners saying "Not another fraud".

Mr Pena Nieto, who was declared the winner after a recount of nearly half the votes, denies the allegation.

Will Grant reports.