Sigh. I am a historian. My entire life is about not hiding history. I want history to be apparent in everything we do.
That doesn’t mean going around making heil hitler solutes, wearing black face, etc. It means that we have frank and open conversations about why we don’t do these things anymore and what it says about you and our society when you do do them.
History has a place in our every day lives. History is not an excuse to perpetuate racist ideas, iconography, clothing, etc.
Wearing a blackamoor pin isn’t showcasing history. It’s revealing you as (in the most charitable reading) an ignorant, uninformed relic of the past. Or, more likely, as a racist, bitter old woman.