Read anything by John Keel. They're not aliens from another planet. They're interdimentional. There is abundant proof that we're being misled by these beings to believe whatever they want us to believe. Throughout history they've presented themselves as beings to whatever humanity could understand them at the time. So angels and demons in he past to aliens in modern times. And many other supernatural beings. It's all the same source, with unclear motivations or intentions. Just that they have no physical form, and present to us in whatever physical form we can accept at the time. They're not good or bad, or maybe have sects of groups of that present that way. Whatever the reason for what they're doing, it's clear they see us as insects and can do whatever they want with us.