March on Downing Street in solidarity with healthcare workers.
The rally scheduled for 28 June has been cancelled.
Over 50,000 people sign up.
Demonstrators want to show solidarity with migrants.
Recorded messages by the pair to feature at London's Big If rally.
Taken at Saturday's Day of Solidarity and Defiance rally in Trafalgar Square by charliedotgilbert.
Show support for protestors in Egypt and several other countries in North Africa and the Middle East, demanding freedom, their basic human rights and immediate reform.
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