When they rumored about them causing an alien invasion, everyone though UFO type aliens, but now we know they meant a 'refugee' type alien invasion.

Didnt HG Wells show that it could be done over a century ago using just radio? His promotion of War of the Worlds can be ramped up a billion times today via modern news and social media. Create thousands of accounts years in advance, plus control all of the news media, both Left and Right Wing and then stage a false flag alien invasion on the news, backed up by thousands seemingly legit social media accounts and there you have it, an alien invasion. Then with whatever budget you have, use what real world technology to continue the charade. Its all a doable performace using smoke and mirrors.

Yes, by using the same technology used in 9/11, only more advanced. Holograms for UFOs and DEWs for disintegrating anything in their path. They could also beam sounds into your skull.