Actually it is a myth that ancient Egypt was built on the back of slaves. The pyramids were not built by slaves but a paid workforce. As for the myth of oppression, that is from Jewish sources in the old testament and that is a lie.

In fact there was no plagues of Egypt or parting of the red sea. Moses probably did not live during the time of Ramses the Great and Jews were not slaves in Egypt but may have been a criminal group of minorities who murdered and stole as they were run out of Egypt by the pharaoh after they had committed many crimes and angered the Egyptian population.

Jews no doubt would have made themselves look the victim of European oppressors if not for the fact that their crimes were recorded and their behavior in European countries well documented.