Here's a case of a sexual orientation nondiscrimination law being used against gay high school kids. We've been warning everyone about stuff like this for years.
City, conservative group settle lawsuit over gay-themed school - Newsday.com
At least in this case, the entity being barred from discriminating is a taxpayer-funded one, so the outcome is in line with libertarian principles. But it's just a matter of time before state or local nondiscrimination laws regarding private entities are used against gay people. In their effort to eliminate "straights only" businesses and clubs, gay leaders have gotten laws passed that may one day destroy gay business and clubs. It doesn't take long for the conservatives to learn how to use our own favorite laws against us, as this Harvey Milk High School case clearly shows.