Be Australian....
Travel regularly, security are respectful and helpful. Plane is generally never full. On the occasion that plane could not make connection, was offered free accommodation, $50 for the bar, Cabcharge to cover travel costs and flight next day even though it was not the airlines fault. This was organised before I got on the first plane and ended up stranded at the next airport.
I feel for you guys, I think there is this us vs them mentality when it comes to anyone in a position of control in United States (I am sure its not like that everywhere). At the same time I believe that generally the people that they give those jobs to are not the most intellectually nimble either so they seem to default to tard-person handling. Same with your cops. I knew someone who was tackled to the ground when in the US because the cop was looking for someone who had robbed something and they kinda looked similar. I get your cops face a higher degree of people packing heat, at the same time I consider the aforementioned action by the cop as assaulting an innocent person. Just because there is a possible threat, does not create this situation where a police officer can go around roughhousing randoms in the street. But if you act the twat towards police then I have no sympathy for you if the cop snaps and gives you a beat down, they are not pin cushions for your own masculine insecurities (Australia looking at you).
Same as your plane incident, the airline put themselves in that situation, it should have been up to them to resolve the matter without the option of using security. It should not be legal for them to use security if the customer remains civil during the situation. It is an administrative problem not a disturbance. The airline needs to bite the bullet and come up with an arrangement to free up the required seats. Even if they lose money.
Honestly if they could have found a volunteer yeah great, but if they could not and all the passengers were boarded then they should just suck it up and reschedule their staff travel. Regardless of how important they think their travel needs are, it is no different to anyone else in a business situation where last minute travel is required. Anyway, everyone has a price and on a plane of 300 people I am sure an arrangement could be made if say a pilot needed to get to a destination to fly another plane if the original pilot had some issue arise causing them to be incapable of working that day. EVERYONE HAS A PRICE, I AM SURE AN AIRLINE COULD EASILY MEET IT.
It comes down to arrogance, lack of customer focus, entitlement and ****head dropkick security guards that lack training and an IQ above 80. I hope the guy wins in court, I hope the cost is substantial, I hope that the airline learns from this and never does it again. I hope they look at their security SOPs and make the ****s sit through a week of power point presentations. BECAUSE **** POWER POINT.