I like Rosa Luxemburg because she always was an independent thinker, and never actually toed anybody’s party line despite how clearly committed she was to socialist / communist ideals.
Her murder by fascists was celebrated across Europa by the enemies of freedom.
Bertolt Brecht had something else to say:
Red Rosa now has vanished too,
And where she lies is hid from view.
She told the poor what life’s about,
And so the rich have rubbed her out.
May she rest in peace.