From their report released today:

"Amnesty International condemns unreservedly direct attacks on civilians as well as indiscriminate attacks, whatever the cause for which the perpetrators are fighting, whatever justification they give for their actions. The organization has repeatedly condemned attacks on civilians in reports and statements and in meetings and other communications with armed groups that have attacked civilians in Israel and the Occupied Territories and in countries around the world. (3) Targeting civilians and being reckless as to their fate are contrary to fundamental principles of humanity which should apply in all circumstances at all times. These principles are reflected in international treaty law and in customary law."

...

"Amnesty International has for many years documented and condemned violations of international human rights and humanitarian law by Israel directed against the Palestinian population of the Occupied Territories. (6) They include unlawful killings; torture and ill-treatment; arbitrary detention; unfair trials; collective punishments such as punitive closures of areas and destruction of homes; extensive and wanton destruction of property; deportations; and discriminatory treatment as compared to Israeli settlers. Most of these violations are grave breaches of the Fourth Geneva Convention and are therefore war crimes. Many have also been committed in a widespread and systematic manner, and in pursuit of government policy; such violations meet the definition of crimes against humanity under international law.

However, no violations by the Israeli government, no matter their scale or gravity, justify the killing of Sinai Keinan, Danielle Shefi, Chanah Rogan or any other civilians. The obligation to protect civilians is absolute and cannot be set aside because Israel has failed to respect its obligations. The attacks against civilians by Palestinian armed groups are widespread, systematic and in pursuit of an explicit policy to attack civilians. They therefore constitute crimes against humanity under international law. They may also constitute war crimes, depending on the legal characterisation of the hostilities and interpretation of the status of Palestinian armed groups and fighters under international humanitarian law. "