Yes, government can infiltrate Steemit with a lot of money, they can downvote (flag), and that can discourage people. So, it is up to we the people to upvote those posts to outweigh the downvotes regardless of where they may come from. The downvoting does not delete (remove) the content off the blockchain of Steemit but it does demonetizes like they do already on YouTube. By the way, Twitter & Facebook banned me for sharing a Hitler photo.