Wow, posters on this thread seem pretty polarised in their position. It seems that the facts are:
the train was short-formed as 4-car instead of its normal length (8-cars?)The only thing that is unusual is that the person speaking to the guard/inspector is a famous actor/comedian. That does not have any bearing on the discussion.
some passengers were standing in 1st class
a passenger (who had presumably paid to travel in the 1st class area) was discussing the appropriateness of the guard/inspector asking those standing without a 1st class ticket to move back into the overcrowded standard class area
the event was recorded on a mobile phone and presumably posted online by an uninvolved passenger standing in the standard class area
Have we actually established that?