All I remember is watching an anime early in the morning on Sci-Fi channel.
I remember a scene of a young boy with a gun in a futuristic setting. He was watching a large conveyor belt with old androids and/or humans being dumped into a machine which turns them into supplement pills that everyone takes instead of eating.
It could have been a movie or an OVA, I'm not sure. Also, I am not sure when it aired on Sci-Fi, but it had to be anywhere from 2000-2006 and it was in English.