It's not an illusion. I've been on HN across various accounts for over a decade. There is a hard liberal-progressive tilt to comments and post flagging which has been documented and remarked upon by others on sites where such comments don't get flagged and removed. Your own bias is also quite obvious, as is that of pg, who is now known on Twitter as a block-happy liberal lolcow. But thanks for posting all that, I'm glad Bolsheviks seething at Mensheviks haven't escaped your attention.