<human>: Give me a shortened version of the text

Hi Reddit,

So, my little brother just got out of basic training in the US army. He's stationed at his new base and every once in a while, I get a phone call, because he's a great kid. He really is the sweetest guy, he always has been. He's the kind of person who just does nice things, and doesn't expect anything back.

 However, in basic training, he picked up some nasty habits. Now he calls unpleasant things "gay" and "retarded", and he makes homophobic jokes. I know this isn't the end of the world, and my baby brother is still the same great guy he always has been. But I want him to act respectfully towards people, like we were both raised. I call him out, but he brushes me off as being "so politically correct". How do I convince him, given that he's surrounded all the time by testosterone-fueled, homophobic dudes, that being respectful is important?
<bot>: My brother picked up some nasty language in the Army and doesn't see what's wrong with it. I want him to stop.