Let The Sunshine In?

I wanted to open my curtians, but I got some nosy ass neighbors whom I greatly suspect of trying to get a peek inside my home. This would be the second attempt. The first time, when I went to get my mail, and returned, I saw them trying to look through the patio window. I keep my shades closed. I want to let some sunlight in, but I can't trust people like that. Alas, my shades stay closed.