Well, because it is threatening to foreign governments.
A change of mind-set about Egypt's history and future is necessary in that country. The history of nations is not defined by heroes in the presidential palace but by heroes on the street. Egypt must focus on building citizen-led institutions to best meet current and future challenges.
An Islamist militant group claimed responsibility, citing retaliation for the Israeli attack on Palestinians protesting the death of an inmate in an Israeli prison.