I understand that much, I still don't get why it is named GamerGate?!
They are a**holes first and firemost, I don't get the link to games.
Them being gamers is not the problem here, or do I miss anything?
I notice some people have already responded to you, but I just wanted to add that the link to video games is a fundamental one. I'm sure someone else could put it more eloquently, but attributing their abhorrent behaviour to them being innately assholes is a little reductive. It certainly can be seen as a prerequisite, especially for the more active participants of the movement, but the fact is they came from within the gaming community and that being gamers was, and is, central to their identity. I'd like to clarify that I'm not claiming them playing video games caused them to behave and think the way they did, and sadly continue to do so more discretely, as that is preposterous. If that were true, I think this thread would look very different and we'd all be spreading the vitriol and ignorance we're condemning and have no tolerance for.
Anywho, to understand GamerGate's origins you have to look no further than the video game community itself which let's be honest, was an exclusive club for guys and in some respects still is (not to downplay all the positive progress made). It was made by men, marketed by men,
for men. Again, I'm not making a causal link between their gender and their behaviour either. It was this insular environment of overwhelming monotony which helped foster the beliefs, attitudes, values, etc that would surface in GamerGate. I think missing this part out conveniently sanitises GamerGate in a way, it's too simple to just call them assholes and call it a day. I mean obviously who would want to share even the smallest association with a group such as this, but we shouldn't forget that GamerGate is video game's ugly bastard child. GamerGate is a prime example of how video games aren't "just video games", and that they shouldn't be viewed exclusively as the innocuous, neutral past time many of us like to believe they are. In other words, video games don't exist in a vacuum. I hope I'm not coming off as accusatory or that you feel attacked, quite often I see people feel persecuted whenever video games are discussed beyond their immediate context as entertainment or art-form.
edit: Almost bottom of the page, eek.