A NSW police officer was in tears in a dramatic day at the royal commission, as the force won’t say who made the decision or why.

The royal commission was told that the "harrowing" details of 14 December must be examined "sympathetically but unflinchingly".

NSW Police revealed they turned down a request for greater presence at the Chanukah event in Bondi Beach from a Jewish security group.

A NSW police officer was in tears in a dramatic day at the royal commission, as the force won’t say who made the decision or why.

The Royal Commission on Antisemitism and Social Cohesion continues its second set of hearings on Wednesday, examining issues in the lead up to the mass shooting at Bondi Beach.