Remove all the furniture, and spray the floor with a hardwood flooring cleaner or your own mix of 10 parts water to 1 part white vinegar. Gently wipe the floor with a terry-cloth mop or a towel wrapped around a mop head. Close the windows and doors to keep dust contained in the room you're sanding. About $200.
Upside Down Flag. Flying the American flag upside down is an officially recognized signal of distress. Here is the relevant part of the US Code of Laws regarding how to fly the flag when in distress: THE UNITED STATES FLAG CODE Title 4, Chapter 1.
Nazis, the KKK and other such subversive groups have long been flying the flag upside down as a symbol of their goal of overturning the current constitutional republican system. Symbols often have dual meanings, one that is told to the general public and another subversive meaning, known to a smaller group of insiders.