Ed Miliband has paid tribute to Labour MEP candidate Del Singh, who died in a suicide bombing at a restaurant in Kabul.
The Labour leader said he was "appalled and shocked by this barbarous act of terror".
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A shock to the system
We found a tableau of desperation; vast crowds of people pushing and shoving their way forward, away from the continuing bombardment.
Cambridge Analytica played a key role in mapping behaviour of voters in the US election and was used during the EU referendum campaign.