Donald Trump dropped in for a photo op in Georgia last night—not the usual kibbitz on the hustings for a former president, but a killer visual to end the week with: a mug shot. And just like that, Trump was restored to his accustomed place in the Republican dogpile: everywhere. It was hard to look away, even if you wanted to. Former presidents do not go and get fingerprinted and mug-shotted and perp-walked every day, even the one former president who takes his arraignments in gift packs of four. Clichés are always bad, and sometimes quite wrong, but the conceit that this would be a “split screen” week for the Republican campaign—eight GOP debaters on one screen, Trump’s co-defendants getting processed on the other—was spectacularly amiss from the start. One screen this week would blot out all of the rest. Read: Magical thinking in Milwaukee Yes, Wednesday’s debate yielded a few enduring images—including Chris Christie, Mike Pence, and Nikki Haley all fixing simultaneous stink eyes upon Vivek Ramaswamy, as if they were about to stab …