Family story:  My dad (now almost 101 yrs old) was a boy scout canoe guide out of Ely in the early 1940's and caught up in "will we be going to war?" times.  He was an artist type also.  So on one wilderness trip he got a hair-brained idea to put a swastika looking symbol on a big rock face by scraping off the lichens to make it stand out.  It got him put on the suspected anti-American list.... :-X