Regardless of any racist language involved, this odious little man was behaving in an aggressive and threatening manner towards another passenger. Passengers have been removed from aircraft for much less and if ever there was a justification for removal, this was it. From the small print in Ryanair's Terms and Conditions:
If, in our reasonable opinion, you conduct yourself aboard the aircraft so as to endanger the aircraft or any person or property on board, or obstruct the crew in the performance of their duties, or fail to comply with any instructions of the crew including but not limited to those with respect to smoking, alcohol or drug consumption, or behave in a manner which we reasonably believe may cause or does cause discomfort, inconvenience, damage or injury to other passengers or the crew, we may take such measures as we deem reasonably necessary to prevent continuation of such conduct, including restraint. You may be disembarked and refused onward carriage at any point, and may be prosecuted for offences committed on board the aircraft.
Yes, I can imagine the pressure to get the aircraft away on time took precedent over the comfort and safety of passengers, whatever any PR statement might assert. Ryanair claim to have handed the matter to the Essex police and hopefully the man will be receiving a summons. In the meantime, Ryanair possibly welcomes the free advertising.
It is good to see that other passengers intervened to protect the woman from the odious little man's verbal assault. With the video being reproduced widely, it is to be hoped that this horrible little creature receives opinions from others in a manner as strongly put as his own.