> To my knowledge there was no coordination of all users to brigade.
I was in the Discord and an active member during the 2016 election. It was actually really civil, more-so than other political subs. Outsiders aren't as welcome as supporters, but try to be a Trump supporter in the /r/politics sub.
You claim T_D was brigaded, yet claim ignorance as to whether such a thing has sprouted from the conservative base which needn't explicitly come from T_D. That's more than strange unless you haven't really explored much else on the site.
There were constantly posts in subs (including defaults) that linked to T_D. Meanwhile, T_D mods did not allow linking to other major subs to prevent brigading. There was no coordination in T_D or any official channels. As an active users in the community I can say I never saw any brigading. I was an active user on Reddit overall before, during, and a bit after T_D. I quit fully a year ago.
tl;dr There was no brigading by T_D, Reddit just didn't like conservatives using their site. Post proof if you have it, otherwise I'll go with my experience with them.
That's not what a brigade is.