“You cannot deny the anti-Israel attitudes of people central to the anti-apartheid movement, like Desmond Tutu”
Tutu has lost all his moral integrity. It is a shame.
“Also, why do you think so many whites, including Jews, had to leave South Africa”
A lot of whites, including Jews, had to leave South Africa because they feared the violence of the South African security forces. It was a police state that terrorized people who disagreed with it. And even fleeing the country did not render you safe, for like the Pinochet regime in Chile, it was willing to assassinate its enemies even once they had left the country. (See Ruth First for an example.)