
Red triangle – political prisoners: social democrats, socialists, communists and anarchists; rescuers of Jews; trade unionists; and Freemasons.
https://en.wikipedia.org/wiki/Nazi_concentration_camp_badge
https://en.wikipedia.org/wiki/Nazi_concentration_camp_badge
Note the Facebook page of the Team Trump account posting the upside down red triangle has a blue check mark. So does the corresponding Twitter account.
Trump promoted the post: https://www.facebook.com/ads/library/?active_status=all&ad_type=all&country=US&impression_search_field=has_impressions_lifetime&id=591999094784607&view_all_page_id=153080620724
Now consider this post in the context of Bolton revealing that Trump fully supported the Uighur concentration camps in China.
Lest it gets deleted - here is Trump's Facebook ads buys promoting the upside down red triangle Nazi badge post: