Political Race riots are not a hypothetical in the USA. If Britain wants a taste there are some things you should think about.
Once a mob is given permission, rules of civility cease. Even the normally civil people will participate by looking on and not lift a finger to save the life of another being beaten to death right in front of them.
I have witnessed this phenomenon from both sides, victim and spectator.
The hard core give themselves permission but when an entire society is given permission to defend their fears and prejudice the society has a mob quality that is sudden and surprising.
No one is entirely immune. You behave like a soldier in actual combat for the first time and it is different than you ever dreamed. Remember what happened to the Tutsi? The genocide was the result of high-risk politics in Rwanda, rather than some revival of "ancient tribal hatreds". . Fast lane fascism takes as little as 2 years to take hold. Remember how fast the Hutus