It's my last semester teaching intro American government, and we just started the part of the course that deals with the judiciary, theories of constitutional interpretation, civil liberties, and civil rights. The students usually really enjoy this part of the course as the cases we study are all about sex, drugs, and free speech. Oh, and what not to do when you get arrested. (Some of them take alarmingly copious notes on that part of the lecture.)
I incorporate current events into my courses whenever possible because it helps the students to see how these issues are relevant for day-to-day life. It also shows that the law isn't static.
For that reason, I'd like to thank the Iowa Supreme Court for timing their decision on same-sex marriage for today. They could not have given me a more perfect example, and it will have the attention of every single one of my students. Here's an excellent summary of the ruling's text.
The essential points as I understand them are that not allowing same-sex couples to marry is fundamentally discriminatory and that objections grounded in religious belief cannot be the basis for legal distinctions in a secular state. That last point is key; try as they may, opponents of same-sex marriage have so far failed to come up with a solid argument that isn't ultimately grounded in personal religious beliefs. As we don't live in a theocracy, that won't cut it.