You charge "when the oppressed become oppressors..." Are you, per chance, referring to the Arabs, who after shucking off the yoke of imperiliast oppression (British, French, Italian) turned around and oppressed the Kurds, Assyrians, Berbers, Copts, and Middle Eastern Jews? The formerly oppressed Arabs proceeded to ethnically cleanse nearly all indigenous Middle Eastern Jews, who now are the majority in Israel. Becareful how you weild that accusation, habibi; it cuts your way too.
Former ruling party in Yemen says it accepts UN-brokered peace plan (Reuters)
from the article: Qana villagers refute IDF claims building fell hours after strike