A year old video, but this video I feel accurately explains the evidence and history of GamerGate:
The Evidence and History of GamerGate
I also find the SPJAirplay Gamer Panels to be worth mentioning:
'Society of Professional Journalists': Airplay GamerGate Panels (Abridged Cut):
If you want the full morning and afternoon panels of the GamerGate SPJAirplay events, follow the links below:
SPJAirplay Morning Panel, "What is GamerGate?"
SPJAirplay Afternoon Panel, plus bomb threat
I think everyone should always listen to both sides of the story and make up their own minds. So if you don't support GamerGate, more power to you. I try to stay as neutral as possible myself. There are things I do not like about GamerGate but as a movement as a whole I do agree with their push for ethics and journalist integrity in the games journalism. I haven't trusted the big gaming publications for year and only rely on them for videos such as trailers and gameplay. As for people like Zoe Quinn and Anita Sarkeesian, I definitely do not like them and I think they deserve all the criticism they receive. But I do not think they should be harassed or threatened in any way, shape, or form.
EDIT: I can't get videos to post correctly, so I'm just sharing link to the YouTube videos.