Here's the scoop on the taxi protests outside the Gaylord. Apparently the hotel stopped allowing taxis to pick up from the front and instead went with one transportation company claiming that the customer experience was better, etc. Looks as if these protests have been going on since June.
http://www.washingtonpost.com/blogs/dr-gridlock/wp/2013/06/14/prince-georges-taxicab-drivers-rally-for-fares-at-gaylord-national-resort/