[wlkr]

There are exceptions for police officers though, who are expected to tolerate some swearing. Relevant cases are listed on Wikipedia.

https://en.wikipedia.org/wiki/Section_5_Public_Order_Act_198...

[geodel]

Well it is just like I learn for driving test that one should remain calm if other driver jumps red light, cut him off or honks unnecessarily. It does not mean aggressor is right, just that one should try de-escalate the situation.