I teased the idea here and got one suggestion (Theses on Feuerbach).

Criteria –

• 'Important' in communist history (think Lenin rather than a cool blogpost or Jacobin article)

• 'Short'; I'm reluctant to give a specific word-limit. It should be readable in one sitting. 'Short' doesn't have to mean 3 pages, but shouldn't mean 59 pages. Basically nothing you'd call a book: a speech✔, a pamphlet✔, a letter✔, an essay✔

• Available to us all online

I would pin the discussion thread for one week, maybe 10 days.

This would be good for people who don't want to read long things to educate themselves.