Egypt is harassing activists reporting on a huge construction area in the northern Sinai allegedly earmarked for refugees from Gaza, rights groups said on Monday. Ahmed Salem, director of the Egyptian-focused Sinai Foundation for Human Rights has been subject to a smear campaign by the Cairo government, Amnesty International and other rights groups have claimed, after reporting on activity at a walled-off exclusion zone close to Rafah. Pro-government personalities and entities have targeted UK-based Salem and his rights group, threatening to bring him back to Egypt if he did not halt his repor…