For 10 years, my partner and I sold cactus at a popular Southern California swap meet.  I spoke with more than 1000 people of all nationalities and ethnicities.  I learned a lot about cactus in those 10 years, and even more about human behavior, from shoppers and browsers.

Predictably, in Southern California, most vendors were Latino and they played a lot of Mexican music.  I started playing country and western music because of the large numbers of ranchers in the area.  What I found was that Mexicans were the big C&W music demographic!  Later I played other genres of music and eventually, patriotic American music.  I gave away FREE 360 Make America Great Again hats; on Holidays I gave away almost 1000 4x6 American stick flags.  I was blown away to see entire immigrant families waving my flags AND MARCHING TO THE PATRIOTIC MUSIC!