In 2017, a report from the Thomson Foundation named the Egyptian capital Cairo as the world's most dangerous city for women. Some 99 percent of female residents there report having been sexually harassed. Egyptian women also struggle to access healthcare, education and the labour market. For a long time, it was taboo to even discuss these topics. But that was until the rise of a new generation of feminist activists, who are using the internet and social media to denounce sexual violence and support victims. Our correspondents report.