Did anyone else notice the hidden text "#@$%&!" at the end of the last paragraph? Does this have some kind of meaning or purpose, I can't figure out why it would be there...

<p itemprop="articleBody"> We’re a tribe, we quiet ones, we readers and thinkers and letter writers, we daydreamers and gazers out of windows. We are a civil people, courteous to excess, who disdain displays of anger as childish and embarrassing. But the Quiet Car is our territory, the last reservation to which we’ve been driven. And we can be pushed too far. Our message to the barbarians who would barge in on our haven with their chatter and blatting gadgets like so many bulldozers is: <span style="color:#fff;"><em>#@$%&!</em></span> </p>