The Ugly Tourist. The obliviousness of it all.

[Dartz]

Basically, you can buy a train ticket that'll let you on the train. And if there's a free seat, you may sit. If there's no free seat, then stand. If you care to - you may book your ticket online in advance, in which case, you can also book a specific seat which guarantees you won't be standing for the whole journey in the vestibule at the end of the car beside the jacks. If you do, your seat will have your name above it on an electronic sign.

It's one of the few things Irish Rail almost does better than the Shinkansen --- all cars are general admission, but already booked seats are electronically labelled so everyone can see that someone has booked that seat and they shouldn't sit there.

So, what they did was take a seat someone had specifically paid for, act incredibly entitled when politely asked to move, insult the spelling of someone's name because they couldn't comprehend non-english spellings, and generally start talking down to someone who just wanted the bloody seat they paid for.