We are supposed to be a nation of laws, not a nation of men.
Even though the elites have always gotten away with more than the little people it is important to remind them when they have crossed the line. We must impeach Obama even if the senate will let him get away. He and everyone will know that the line still exists.
If we don't bring it to their attention, then the line will disappear and cease to be meaningful. Eventually we will all disregard law and order.
The rot at the top has already trickled down in some demographics. It is just a matter of time until other demographics decide they are "equal", too. This same phenomenon destroyed order in schools in the late '60s and early 70's in some areas, only this is far more widespread. Peaceful reversal of the trend becomes less likely with each passing day.