So? Much of the paramilitary equipment owned by the Egyptians is US made, as is true with many of our allies, even some of our enemies. Though that may be relevant in a related discussion, I fail to see how it connects to or detracts from the point of my post.
I have no doubt there will be elements among the protestors whipping up anti-American sentiment and trying to capitalize on it, and some for whom that is a genuine concern. Not to mention there are always fringe elements in any social/political protest who have a narrow agenda divergent from the main focus of the protest, which is not to say America's support of the Mubarak government, past or present, is an illegitimate criticism.
I think Mubarak's support by the US government is a huge reason why he is so despised, and Obama and Clinton know better than to give their seal of approval to any replacement, as that would be the kiss of death.