Why wasn't he charged?

Why was the guy who attacked a protester today at the No To Pope Rally not charged?
The video clearly shows him attacking the Protesters.
If it was one of us we would have been charged
It's not on, he should be charged with assault!
Remember the face in these photos, this is the face of someone who will most likely attack someone else, he should be charged and made aware that homophobic violence is not on!