Ok.. this could be anyone sitting outside this males home. But considering he is an investigator and posts UFO footage to masses it does make me wonder if this is in fact something to do with investigators linked to FBI/MIB etc.
I do believe in targeted individuals. I believe it's very uncommon, rare in fact. But I believe that yes, if you find something genuine and you post it to masses they will find and watch you/remove it.
This man had uploaded footage of (what he claims ) was real ufo footage over Arizona. His youtube channel is full of footage and paranormal vids.