@jon One time me and a friend with short blue hair, both white, had a book about RAF (German terrorist group, not British Air Force), that is slightly favourable to them, out.

After glancing at our ids, the border cop joked “I should really check your luggage, what with that book,” and we replied “yes, you really should.” He chuckled and went on to harrass a POC family with completely fine papers, instead.