Muslim Brotherhood confirms participation in all protests in Egypt

 

Above is a screen shot of the Muslim Brotherhood website (mid-way down) showing they were participating all along with the protests in Egypt.

Also. it appears one of CAIR's directors, Ahmed Rehab is in Cairo based on his tweet from a few minutes ago.  CAIR National was started by leaders of the Islamic Association of Palestine, an overt arm of the Muslim Brotherhood, if you didn't know:

 

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Also see:

CNN did a quick overview of the Muslim Brotherhood here.  Note, they wrote it was believed the MB in Palestine started Hamas.  This is stated to be so in Hamas own document setting forth their Islamic supremacy goals to destroy Israel.

Middle East Quarterly info here

Muslim Brotherhood plans to destory the U.S. here (U.S. District Court of Northern Texas)