No one could argue that the original motives which prompted the formation of trade unions were entirely honourable. However, it could also be argued that, in recent times - in particular - some of their officials seem to have abandoned the original principle of protecting workers' interests in favour of attacking those of employers. As a former member, I feel disappointed because it reflects little credit on the movement. What's more, I'm saddened by the opportunistic use of the Olympics to gain an advantage.
http://www.guardian.co.uk/sport/2012/jul/18/heathrow-olympic-strike-border-staff
http://www.bbc.co.uk/news/uk-england-18899474
http://www.guardian.co.uk/uk/2012/jun/22/bus-strike-olympics-pay-london