I thought the consensus was that the looters were mostly young out-of-states whites? And to insinuate that the President had read some 1940s Florida mayor's (sorry, I can't remember who the saying is originally attributed to) speeches and knew the connotations of that phrase is ridiculous.
This is easy and standard procedure for talks, ... of big company leaders, politicians, ...
Donald Trump was already an adult in 1967 and even if he didn't know this was a dog-whistle for white supremacists.... Facebook doesn't have to amplify destructive ideologies just because the ones who relay it are ignorant. Otherwise everyone would invoke that excuse.
The idea that this is a well-known racist catchphrase which anybody had heard of a month ago is absurd, and you know it.
(For the record, I despise Trump. All I ask is that we keep our criticism of him tethered to reality - it's not like we don't have enough non-fictional reasons to oppose him.)
When people loot, other people will shoot them to prevent their livelihood from being destroyed. It’s a good phrase to sum up that there is going to be a violent reaction to looting.