We need this to be big, widespread. I do know it is the SOS signal, but remember the controversy about the use of the word “niggardly” a few years ago. Needs to be simple and straightforward so even the uninformed followers of the left will understand. My guess is, they would characterize an upside-down flag as disrespectful, which is the polar opposite.
Personally, I don't give a flying pig about their use of the word.
ALL American citizens, who believe in our country would understand the symbolic use of flying the flag upside down, especially if we ALL did it.