I'm not racist, I hate everyone equally

Seriously though, this is cause and effect. It's not right but it's the way the world works. If you find that a small portion of italian/african/euros/muslims/etc spit in your face when they walk past you, eventually you'll turn away whenever one of them walks past you without knowing if they were one of the bad eggs. It's not racism, it's human nature, you react to the circumstances you live in and you adapt. Call it what you what, it won't change and banning it from the forum won't change the way people talk at local kitespots. If Euros (or any other nationality) are misbehaving, or continue to do so, it will continue to be a talking point. People aren't going to sit there saying "hey, that guy did a short tack, but he's a euro so I won't bring it up in case it's racism".
Unfortunately it also doesn't help much ranting about anyone here, no matter who they are. I suggest you get onto some of the overseas forums and warn them that because of the behaviour of a few, it's affecting the perception of kiting tourists as a whole and that localism may become more prevalent (and potentially violent) if tourists fail to follow local guidelines. Put the guidelines up on local websites (WAKSA, AKSA etc) and maybe a couple of them getting a fist full of knuckles may be a suitable outcome where only those guilty parties get it and they can take their experiences back to wherever the never learnt manners and warn their fellow travellers that a lack of manners won't be tolerated.