You will find crazies all over the place. All over the world. Sorry that you had to run into one. I imagine that this person who assaulted you has done something like this before. In short - a repetitive action by someone who is violent.

You did the right thing by reporting it. If you choose to pursue it you'll be spending a fair amount of time doing the initial legwork. Once in gear justice will hopefully come? That said - justice does not come without a price. An amazing amount of time, money and aggravation will be all part and parcel of correcting people who do wrong things.

Glad you are OK and sorry that you had to run into a crazy person.

Essex

p.s. As a note - people who do things like this often count on people not following up. The molding process occurred somewhere in their childhood where they were given the message they could get away with things.