That's the message I got when I tried to see the video.
I don't claim to know what happened exactly on "the day of the camel" but the two Islamist in question might have been "foreigners" who spoke Arabic or Egyptian dialect with an accent whether Arab or totally foreign accent.
In July 2013, many Islamists were arrested in Ramsis Street and other clashes. A good percentage of them were Chechens, Syrians, Palestinians, etc. Some of them didn't speak a word in Arabic, let alone had an accent!
In the day of the camel, the Islamists and the MB tried to tag Mubarak with killing protesters. When it didn't happen, the MB did it themselves by killing their own and crying martyrdom. Something they did a lot of many times in Rabaa and Nahda.
Many of the above-mentioned events are documented upthread and in the two older threads.
0b0z0's new ambassador to Egypt to replace Anne Patterson should be:
Why did I suddenly think of a brick house just now?
Useful idiot or Just an Idiot?
Did you try the 2nd link? My video software does not handle HTML5.