I'm more than willing to look at the broader picture, as I've said i agree with the motives for going on strike, but you are talking about people who will have spent hundreds and probably thousands of pounds to go on holiday, and for many of them it will be the only holiday they have this year. It is perfectly possible for the people on strike to make their point by not turning up for work and perhaps by having a peaceful picket line outside.
The general concensus from people that I talk to is that sometimes strikes are necessary. People who are due to travel (for the most part) are content to be lumbered with a delay, but if the strikers start preventing people from getting into the airport and ultimately away on holidays that they have spent a lot of money on, any support from the public will dry up very quickly.