The most moving and powerful pictures from the Paris unity rally

France has come together days after one of its worst-ever terrorist attacks, with what has been described as the largest demonstration in the country's history.

French president Francois Hollande said that for one day Paris would be "the capital of the world", and up to three million people took to the streets in a rally for unity, according to the interior ministry.

Here are some of the most moving and powerful photos on an emotional day for France, and the wider world.