If those kids kicked the ball in the direction of the adults playing backgammon, and they hear bad words from the adults as a result, those kids have only themselves to blame. You can't do bad things to people and expect them to react in a good way. People don't say bad words because they're stupid or because they have a low vocabulary, but because they're angry. Don't complain about the symptoms if you're the one spreading the disease.
I don't use bad words, but I don't complain about other people using bad words, because I know that it won't do any good. If you want to say bad words to me, go ahead. It's your right, protected by the First Amendment of the United States Constitution. If I've disappointed you so much, if I've treated you so badly, I deserve to hear those bad words.
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