Sudanese Killed in Cairo: Skin Color?

It's front page news (NYT, AP, etc) that Egyptian police today confronted Sudanese refugees who fled to Cairo to escape the civil war in Sudan. They made a make-shift camp in a Cairo park and squatted there for three months, according to reports. At least 23 Sudanese have now been killed, all of them unarmed, some children. It is true that the Egyptian economy is struggling and Cairo has its own problem with poverty, much of it severe. It's possible that additional poverty-stricken folk from another land could add to or break an economy already bending from indigenous matrices, including corruption. I also can see how public space in an over-populated country is important to defend, given the human need, for a healthy psychology, to see greenery and walk through aesthetically pleasing space. But the devil asks: If these were Bosnian refugees in Cairo, fair-skinned Europeans, would the reaction be the same? Given the near national obsession with skin hue in much of the Arab world, especially Egypt, would not the riot, then, be over Egyptian men seeking wives from the downtrodden damsels now on their soil? It would be bad poetry not bullets aimed toward the crowd. I'm not the only one entertaining such questions. It's hard to find a people more taxed by the trials of civil war and political play than the Sudanese. Again, the dynamics of the situation are not fully covered by the "press," whether controlled or free. But we know enough to still wonder.