If you're asking if Communism is compatible with the Hindu caste system, the best people to ask would be Hindu/Indian communists. I don't know any Indian Communists personally, but here are some examples of sources I found that seem to indicate that culturally-Hindu Communists don't seem to thin...

Yes, regarding new unsourced answers, the time span of a week for normal/regular users and a fortnight for new users is fine. I suggest to add "citation needed" post-notice before deletion so that users can get notified/warned. I encourage to improve answer (by adding sources) that are salvageabl...