Tourist trap

Tourists are the bane of my existence. Seriously, I don't get tourists. I was walking on the Brooklyn Bridge earlier, and these idiots were walking in the bike lane. I've stated many times before that anyone who gets hit by a bike while walking in the bike lane is liable for any damage to the cyclist's bike, even if they're from Minnesota or some other place prone to ignorance about walking in front of moving objects travelling at high speeds. But today, these tourists are walking in the bike lane (if anyone has never been on the Bridge, there are these big bikes painted onto the bike lane to make sure you know that it is the bike lane, as well as big people painted onto the walking lane - it can be confused for a men's room though), and they got mad when some innocent guy riding his bike had to swerve out of the way to avoid hitting them. One guy turned around and whispered "fucking asshole" under his breath (of course, the cyclist was already out of earshot when this happened. The reaction time of this tourist was remarkably slow). His friend turned to the first guy and shook his head, bemoaning the insolence of New Yorkers. I don't understand this Bruce Banner-like transformation. What makes a presumably rational person turn into such a complete, utter moron? Maybe I'm just overestimating the intelligence of a person who can....well, get dressed. After all, they can't deduce from a big painting of a bike in the lane they're walking in that they may be in the bike lane.