Here's an excerpt from a Crew supporters blog that specifically mentions an ant-Seattle scarf.
I and a few friends of mine are of the opinion that Seattle Sounders FC sucks for a lot of reasons.Pretty funny, don't you think. Some clever kids behind this one. But the Crew will prove to be nothing without Sigi. 2009 will prove that.
Not so much the Sigi thing, but the fact that you have these weak supporters out there in Seattle who couldn't support their club in USL, but then you get a comedian, a Microsoft trillionaire and a producer together to buy them a club and now they are going to fill half an NFL stadium with latte sipping soccer moms to watch an underwear model in a neon kit run around on plastic grass to the tune of Gary Glitter played by a f'in marching band.
Seattle has no soul and it's not what ultras culture in North America should be about . . . in our opinion.
[Credit MLS Rumors with the tip]