Steve, Wadsworth said much more than you just quoted.
The Party suspended him for antisemitism.
Take it up with the Party not me.

Jim,
There were a few massacres in that camp, all by Arabs.

The Israeli army facilitated assisted covered up the massacre of 3,500 unarmed refugees

No. They facilitated and assisted an Arab militia to go in and take on fighters in the camp.
You need flares to do that at night.
You do not need flares to murder civilians in their homes in a crowded camp.
The massacre was in daylight.

The massacre was committed by Arabs.
The Israelis moved in and stopped it.

Israel's own enquiry declared Arial Defence Minister Arial Sharon personally responsible for the massacre;

Only indirectly responsible, in that he should have foreseen the risk of a revenge massacre.

All that stuff about bulldozers and stadia and thousands of victims is wild propaganda.
No evidence for any of it.