I mute and block freely when I see people being a dick, either to me or someone else, specially "repeat offenders". That's something I learned to do on Twitter because as soon as a post reaches escape velocity you're confronted with the entire deluge of what social media has to offer, and sadly enough of it is people I don't want to interact with ever. This means that I often see the reverberation of entire threads from a single reply of a person interacting with people I'd muted. I'm yet to click through when curiosity gets the best of me and think "why did I mute these people?". It turns out that nonconstructive people tend to be consistent. Life's too short to take the rage bait or deal with people who only want to fight.