You try keeping up. If you don't have a right to speech on Facebook or Twitter then they can't be violating your rights since none exist. How hard is that for you to understand my guy?
My lawn is the same as Twitter. I can invite whoever I want on to my lawn for a lawn party and I can kick out anyone I want if they talk about things I don't approve of and it doesn't matter if I'm an FBI informant. My private property doesn't suddenly become a place you have free speech rights.
Where did I ever claim that as a CI (and a government employee) that I have a right to conduct a search and seizure of your residence?