A subject covered before in these pages : in particular relating to the protest art from Mexico and Paris in the late 1960s.
Where in the UK we might get sentimental about certain symbols like the iconic CND symbol
The Americans however take this to the next level with their Center for the Study of Political Graphics.
There are a number of exhibitions featured in this link, most with video catalogues, enough content to get absorbed in!
One graphic there that I can’t really explain but quite appropriate for today !