Matthew Yglesias, writing for Vox:
But the truly scary thing is that Trump is redefining the concept of a gaffe out of existence. It turns out that if you just boldly repeat something often enough, it goes away as a story. We’ve become numb, as a society, to what Trump is doing. In the process we’ve normalized casual racism, intense personal insults as an approach to politics, and completely decentered the idea that elected officials should grapple with difficult policy questions. Half the crazy things Trump says or does barely merit a mention on Twitter, much less the front-page coverage they would have merited in previous campaigns.
More than anything else, the numbness that Trump creates frightens me.