Hey, once Shari’a law is established here in the US, a young Muslim male has totally free hand to impress his masculinity on any female in the vicinity, so long as “too much” exposure of the female form is made available to his sight.
Uncovered female heads are just an open invitation. The covered head means, “no touching”. Kind of like Gru in “Despicable Me”.
It's not about covered/uncovered, it's about "under the protection of a fellow Muslim" versus "unprotected, and therefore fair game". The girls were not violated because they showed skin, they were violated because the perps thought they could get away with it. Think of it as low-level warfare: "you will only be safe if you submit to Islam".