And we shouldn't allow this concept to go unchallenged here on Lemmy.
Commenting on an active post is not brigading
Posting a link to something is not brigading
Commenting on something you were linked to is not brigading
The only thing that might be brigading, but isn't because it isn't a real thing, is someone explicitly going, "Hey everyone, go here and harass this person"
It's all fine and good that we have some new rules to keep the peace with other instances but we must fight against 
I forgot how fragile and cowardly liberals on the internet are. Hexbear has spoiled me because you get actual communication with people who are willing to defend their beliefs in a passionate, level way without getting nasty.
Even just calmly telling someone "hey we can't downvote you" is seen as harassment