| Wednesday 31 March 2010 at 10.30pm on BBC Two Presented by Jeremy Paxman Prime Minister Gordon Brown has stepped up his pre-election rhetoric on immigration by telling would-be illegal migrants: "You are not welcome." He said that we would "reduce the overall need for migration while continuing to attract the key people who will make the biggest contribution to the growth of our economy." And with Labour facing a challenge in some areas from the anti-immigration BNP, Mr Brown urged a "united front" among the main parties to combat "xenophobia". But he said it was right for politicians to talk about immigration and address people's "needs and fears". Richard Watson will be bringing us more on that tonight, and we'll be speaking to senior politicians from all the main political parties. Elsewhere on the programme, Peter Marshall has been investigating why the courts are imposing draconian prison sentences on young people arrested for public order offences at political demonstrations. And, 16 years after 800,000 people were killed in Africa's largest modern-day genocide, Tim Whewell visits Rwanda to see what challenges face the country as it rebuilds. Rwanda is moving on but at what cost to human rights? Read more on that story here. Do join Jeremy at 10.30pm on BBC Two. | 
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