"The SELinux project was merged into the Linux Kernel back in 2003"
It's still listed on the NSA website in several areas: http://www.nsa.gov/research/_files/selinux/papers/x/x.shtml
To be honest though, if someone was downloading tails from region of know terrorist activity and such systems are actively promoted amongst terrorist sites then it obviously makes for a good target. But the Linux Journal ..comon.