Egypt’s authorities are trying to cover up the deaths of more than two dozen people killed in protests marking the 2011 uprising, Amnesty International has warned today. Against the backdrop of a government smear campaign against protesters, Amnesty International has gathered information on prosecutors threatening eyewitnesses with arrest and security forces detaining at least two journalists for their coverage of the protests – as well as holding at least 500 demonstrators and bystanders in unofficial detention centres.