I completely completely agree with CaveMum's post of 22.09 last night - Channel 4 are playing this very cleverly - the worst is yet to come.
Also completely agree with SusieDaisy. Individually they all (the women and young children at least) seem humble, decent, innocent and delightful etc, but each episode hints at small behaviour patterns/attitudes that are endemic and which frankly, just seriously piss everyone else off.
I tried to get my 18 year old son insured to drive a very small cheap 1.1 car recently - I couldn't. They wanted £3800. Think it through, people. 
That driving over the pavement thing was appalling on a number of levels. The fact that so many of the men choose to have their faces pixillated is very telling. I'll wager it's more to do with the police or the taxman or their feudal enemies, than any perceived damage to their businesses, but it's an easy to cop-out to say that, because it goes nicely with the Persecution theme.
And the scene at the riverside was very telling also - the way the lad deliberately dive-bombed the canoeist. Of course many teenaged arseholes would do that, but there certainly seems to be an accepted culture of Male Arseholery that must not be questioned on the grounds of Racism.
I'm seeing many parallels with the way young (fundamental) Muslim women are treated, and it raises all the same questions/emotions. It's hard to be enraged on the one hand, yet still be liberal/respectful/accepting of other cultures' beliefs and practices.
I went to school with quite a few Travellers. If my experiences were anything to go by, a culture of bullying them wasn't so much the issue as a very, very defensive stance from their point of view, which led to having huge problems accepting authority, following rules, and integrating. This inevitably led to friction.
And I have observed exactly the same patterns in shops and restaurants too.
I grew up using the word Pikey. (I'm in my 40's) I wouldn't use it now as it has been deemed pejorative, but to us, back then, it was just like saying 'Limey' or 'Yank'. I think it's only been in recent years (since they have been identified as a 'persecuted' race) that it has become unacceptable to say it. I would argue that it actually derives from the word 'turnpike' meaning toll-road. In the days of no designated sites, that's where they stopped. They lived by the turnpike, so became known as Pikeys. The roots of the word are not necessarily pejorative, but the Gypsies and Travellers don't like they word, and therefore it must not be used. Also the meaning of the word has evolved over the years, to encompass all sorts of negative sterotypical behaviours. It is a verb - as in 'he pikeyed my bike'. Wrong, of course, but you do have to ask yourself how this happens...