That's just horrible. And wtf is this "Yes it's a crime but what can we do?" bullshit.
Man I feel sorry for that guy. No body deserves to be treated that way. He just wanted to have a nice night out. Fuck that restaurant.
It's 1000% a human rights violation. There are proper channels. Don't think police can do anything. The police even called it a hate crime, which it is not, because kicking someone out of a restaurant, regardless of the reason, isn't a crime in and of itself.