Thousands of people are expected to take part in a "mass sleep out" tonight to protest against the "bedroom tax" and other welfare changes. Protests are due to take place in towns and cities across the UK, including:
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The major party leaders' campaigns for the General Election will remain suspended on Wednesday following the Manchester terror attack.
Thousands of people have donated to help the families of the victims - as well as a homeless man who came to their aid.
Some children, particularly those who have been more directly affected, may show symptoms of stress and trauma.