What we need for genuine 21st century communism:
1: A return of Marxist bookclubs infiltrating every university and college.
2: The spread of self improvement towards younger, interested members of communist groups.
3: More modern-centred anti-capitalist unions now that the proletariat in the west has shifted dramatically, tenant unions for example.
4: Youth Culture intermingling with Left Wing philosophy
5: More independent youth movements until Communist Parties start getting younger, and to an extent, more radical leadership.