Author Douglas Murray has clashed with Sky News Australia host Piers Morgan over the ongoing pro-Palestine marches and whether a majority of the participants support Hamas.

“You don’t honestly think they are all pro-Hamas these people?” Mr Morgan asked.

Mr Murray pointed out “anyone who chants ‘from the river to the sea’ is in fact”.

“They are not all doing that – I’ve watched the videos and there are some who are chanting and some who aren’t,” Piers Morgan responded.

“Here’s a challenge Piers," Douglas Murray said.

"If you had decided to go on some kind of march and in week one you discovered that you had the BNP (British National Party) on your side calling for the murder of all black people, would you not wonder whether or not you should go on week two and would you not drop out by about week three?”