What an awful experience. I hope the police find the jerks who did it.

As for the glasses, you might be able to get a relatively cheap replacement through an online site (provided you know your prescription). I just ordered a new pair through Zenni Optical for $22 including postage, and I have a fairly strong prescription. Of course, I don't know if they'll be any good, but I've heard positive things about Zenni and the price is right.