• Don't just believe everything these motherfuckers tell on the TV. Let me show you some alternative points of view.

The gentlest way to use swear words when speaking to someone is to direct the swearing to somebody else. The one being wrong is not guilty, but just deceived or confused.
Make it obvious that you don't blame them with your words.

After all - you can hurt people even if you don't use swear words. It's the intentions that count most of the time. One must know how to express their intentions with words.

If you do that and, even then, the person still gets offended - then you probably intended to offend them.