Just rewatched the video, I don't think you had the right of way at all. The Mazda (5LRMI78) was alright turning when you proceeded unto the intersection. You then tried to turn into where they were already turning. Also, the California Vehicle Code section 27001 makes it a crime to use your horn unless it's necessary.
But please, keep posting the videos. They're HI-larious. Also, learn how to share the road. Then take a breath and get on with your life. This isn't special and it happens to countless millions on a daily basis.