Nothing is censored in Steem blockchain, downvote makes it invisible.
Everything is stored in the blockchain and can be retrieved with different frontends.
The front-ends such as Steemit.com or steempeak.com are companies that abide the laws the country of residence and can censor stuffs due to the existential survival.
Steem is a censorless blockchain, frontends decide their censorship based on their TOS.
Posted via Steemleo