Mass Effect 3s ending comes to mind...
How long ago was that exactly?
Although, most of the toxicity was lumped on Off Topic (which was generally the saner part of the forum) when it really was the ME3 sections (there is still porn floating around in some threads), and whatever social justice issue was flamed to hell in the DA section.
When Off Topic was closed down it was heralded as the "final solution" to the toxic problem, and that with Off Topic gone the forums would return to the mythical times of sunshine, rainbows, and unicorns it was supposedly before DA2 and ME3's endings. Of course, Off Topic was the scorn of the forums before those games as well, I should know, I used to propogate that myth before I met the wonderfully amusing (and sometimes sociopathic) members of it. I'd go into a whole description of it, but I alk ready did that when Off Topic closed.
The people of this forum were written off years ago, BioWare just decided to make it official and had the "courtesy" to tell us that we're all trash.