As a longtime BART rider, we could safely conclude there are really only two types of commuters: givers and takers.
Of course, there are varying degrees of each, and only the more enlightened daily commuters are the perfect combo of both nice and mean while riding transit.
And then there's this guy who isn't nice or mean, or the perfect combination of anything. He's just clueless. As you can see in the video below, this commuter doesn't just intrude on your space -- he consumes it.
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As infuriating as that is, we're always happy when we see someone reading a newspaper -- even if means we don't get a seat on BART.