Free Speech Twitter Vs. Steemit

Opinion/Question:

I just read/watched a video on the issues Twitter has been having. They first started out being the "Free Speech" platform where anyone can have discussions about important issues, without having to worry about the platform censoring them. Along came the trolls, shouting matches, my God can beat up your God etc... Twitter had to do something and they are still working on it.

Steemit has the choice of upvoting articles that they like and downvoting/flagging items that are not helpful to the conversation or just downvoting because they don't like the content. I'll leave that discussion for others as I am still on the fence on what should be considered "flagged". I can already see it starting to creep in. People think something is offensive, and as a normal citizen of the U.S., it can easily be considered offensive to me as well. I see person A flag the article, but then the author turns around and starts to flag person A's posts just for spite. Person A put their "money where their mouth is" and did a noble thing by stating normal society does not like this kind of behavior. They get attacked by the original author, then fights start.
Someone looking in to the dispute will see that the original author is at fault, but the damage has already been done.

My question is this:
Should you step in and down vote things that are not appropriate, or just don't upvote them? Should you wait for someone with a large SP/rating step in and do it? Should you report it, but in the mean time it garners a few dollars by (insert bot/whale on a mission/etc) in turn showing the author that it could be "all ok" to post these things?

Any takers?

Thanks