It has been called the "smartphone intifada". After a sharp escalation in violence between Palestinians and Israelis in recent weeks, shocking scenes captured on video have spread across social media.

According to Israeli human rights organisations, several such videos challenge the accuracy of official Israeli accounts of the circumstances in which police have killed or injured Palestinians.

The footage, the nine groups said in a statement this week, provided concrete evidence that police were "quick to shoot to kill" rather than arrest Palestinians in Jerusalem and Israel who were suspected of involvement in attacks on Israeli Jews.

The shootings, they added, had occurred when the Palestinians posed no physical threat to security forces.