Journalists, scientists, human rights activists and even a clown are among the Palestinians currently in Israeli jails. Since the Israeli occupation began in 1967, Israel has jailed between half a million and 800,000 Palestinians. The conviction rate is about 99 percent. Among the arrestees are also those in administrative detention, an Israeli speciality: over the previous year, 1,742 orders for detention without trial were served against Palestinians; some held year after year.