Hate crime. Lock him up.
First reaction: hate crime, lock him up, as johniwaniszek said
Second reaction: let him meet this girl and her family in a quiet, supervised setting. It’s easy to go with your gut hatred and rip the hijab off an unsuspecting girl and then run away. Harder, maybe, to look her in the eye and explain yourself. If they could have even a little bit of dialog, maybe this asshole learns something.
And instead of locking him up, 30 days community service at the local Islamic center. Under supervision, of course.