Jews have performed genocides since antiquity. Jews, followers of Judaism, do not denounce Zionism. Orthodox Jews are the strongest supporters of the current genocide.
Discussion
"Orthodox" is a catch-all for hundreds of squabbling sects.
Some are, in fact, relentlessly non-Zionist or even anti-Zionist and always were.
Some are, of course. Speaking in absolutes about a population is racism. Fact remains the vast, vast majority of practicing Jews are supportive of the current ethnic cleansing, with religion being a big part of the reasoning.