To any supporters of these X-COM terrorists:
Ridiculous. You're just another of those conspiracy nuts. Next you're going to claim that 9/11 was an inside job and that the City 17 attacks were actually a good thing.
The Visitors are the best thing that could ever have happened to us. You know what humans suffered from before gene therapy? There was a disease where your own cells would grow out of control and eat you up from the inside. There were people who couldn't walk or talk or see because of genetic disorders. The Visitors rescued us from those horrible afflictions. I've had several genetic treatments (those neuro-enhancements are awesome) and I think I would have noticed if I had become part of their "gene buffet".
And if the Visitors hadn't come, who would have shown us how to create free abundant energy without polluting our planet? Who would have brought us technology beyond our wildest dreams, saving millions all over the world? Who would've united us and stopped war forever? Certainly not us humans.
Your claims about the incident in Berlin are without basis in fact. I've read several independent reports, all agree that X-COM were the aggressors. And before you claim that those reports were created by the Visitors in an attempt to "hide the truth" – who is more trustworthy: Several independent sources – even if they were manipulated by those that have brought us peace, health and technology – or some random conspiracy nut on the web?
So, everyone who's reading this: Don't waste your time thinking about this. Be grateful for what the Visitors have given us.