That was terrible!!! But what do you expect from these heathens, these satan worshippers?? Of course they're going to desecrate the Word of God, they hate God and His Son Jesus Christ!!!
But, it is their loss, not the person who owned the Bible. Yes, it must have been precious to him, but …
1.) Why would you bring your precious study bible to a place filled with Heathens?? Maybe, if you had to bring one, bring one that is not filled with all your notes/notations etc. I have several bibles, but there's one leather bound one that I cherish that I've had since a was a little girl. I would never take it to a place like that.
2.) Doesn't the Word tell us not to cast your pearls before swine? Good to head that!!
3.) If you are a true Christian, and I'm not saying he is not, then the Word of God is written in your heart! Don't worry and fret about it, however, don't 'excuse' them either or let them get away with it. I would definitely sue them - you have it all recorded on video! Sue all of them that were involved! (assuming you can).
God will heal your heart!