A cou­ple days ago, a visu­al­ly com­pelling thread on Twit­ter explod­ed with thou­sands of shares and likes and dozens of users sub­mit­ting their own con­tri­bu­tions. The thread (a series of con­nect­ed tweets for the Twit­ter unini­ti­at­ed) has become an evolv­ing pho­to essay of women activists stand­ing up to walls of mil­i­ta­rized riot police and mobs … Con­tin­ue read­ing Pho­tos of 19th-Cen­tu­ry Black Women Activists Dig­i­tized and Put Online by The Library of Con­gress