I was just alluding to what has been said/quoted by the author.
The original "author" of the meme was a White Supremacist. The Trump campaign grabbed it in its entirety and put it on Trump's Twitter feed. This is not difficult to understand. There are hundreds, maybe thousands, of stories about it.
It's often best to understand an issue before commenting on it.
Twitter does have some useful purposes. The kid's baseball team uses it. Send out a tweet that the game is cancelled and you get an alert on your phone asap.
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