They can always stand on top of the sugar beet piles
Obama's inauguration brought 2 million black people to washingon DC in 5 degree weather
I would think that preparation for lodging in, and travel to Washington took more than one day. The election was on Nov.4,2008 the inauguration was on Jan. 20, 2009. By my calculation that's over two months.
"....yet 4 thousand couldn't get out of new Orleans in 85 degree weather and two weeks notice."
The population of the city of New Orleans before Katrina was 454,465. 80% of the city evacuated before the storm. That means that 363,572 people left. The remaining 20% percent that did not leave came to approx. 90,893 people. In other words, Katrina's approach saw the orderly evacuation of over three hundred thousand people from a major metropolitan city under emergency conditions. By anyone's estimation, it was a success.
Oh BTW, a hurricane’s exact path is unpredictable almost right up until it hits. The best time to evacuate is a few days ahead of projected landfall. Unless you are independently wealthy or retired and have no job to which to report, nobody evacuates two weeks before a hurricane. During an entire hurricane season the cost of hotel stays, food, and gas for the car, can add up to a major chunk of change. Most people watch the weather reports and leave when their city officials call for it.